Insomnia, Primary Clinical Trial
Official title:
Transcranial Magnetic Stimulation of the Default Mode Network to Improve Sleep
Insomnia is generally believed to be caused by excessive arousal of the brain and body. Rather than transitioning normally and quickly from wakefulness to sleep, individuals with insomnia tend to enter into a self-perpetuating cycle of self-referential thought and arousal. Brain imaging research has shown that these same internally focused self-reflective thoughts tend to activate a core system in the brain known as the Default Mode Network (DMN). The DMN is usually active when a person is internally focused, such as during daydreaming or mind wandering, but tends to be deactivated when the brain is focused on the external environment. The investigators hypothesize that excess activation and connectivity of this brain network may perpetuate internal conversations, worry, and rumination, preventing individuals with insomnia from falling asleep quickly and remaining asleep. Therefore, the goal of the present study is to use a brain stimulation technique known as transcranial magnetic stimulation (TMS) to target the DMN and slightly reduce its activation before bed. This should result in an easier time falling asleep. For this study, the investigators will recruit 20 healthy individuals and have them sleep in the lab on two occasions. On one occasion, they will be stimulated with a type of TMS called continuous theta burst stimulation (cTBS), which will be targeted toward their DMN. They will then try to sleep in the lab while the investigators record their brain waves using a technique known as polysomnography (PSG). On the other occasion, these same individuals will undergo the same procedure, but the TMS machine will be in a deactivated mode to present a "sham" stimulation. Participants will again try to sleep in the lab following the sham treatment while being recorded with PSG. Neither the participants nor the experimenters will know which condition the participant is receiving at the time. This will only be revealed later. Additionally, all participants will receive a brain scan just before and just after the TMS procedures so that the investigators can examine changes in brain connectivity and chemistry. The investigators expect that the participants will sleep better following the cTBS than following the sham condition and that this will be associated with measurable differences in their brain connectivity and brain chemistry. If effective, this project would have identified an innovative and novel approach for improving sleep without using drugs.
Status | Recruiting |
Enrollment | 20 |
Est. completion date | August 31, 2022 |
Est. primary completion date | August 31, 2022 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 50 Years |
Eligibility | Inclusion Criteria: - Healthy men and non-pregnant, non-lactating women 18-50 (inclusive) years of age, free from contraindicated diseases, medications, devices, and conditions. - Participants must meet the criteria for primary insomnia as determined by scores on the ISI, PSQI, and ESS. Participants must obtain two out of three of the following required scores for each questionnaire: - Greater than or equal to 15 for ISI (Gagnon, Belanger, Ivers, & Morin, 2013) - Greater than or equal to 6 for PSQI (Buysse et al 1989) - Greater than or equal to 11 for ESS (Johns, 2000) Exclusion Criteria: - Presence of any metal implant or medical device which may pose a safety risk for MRI or TMS (see below for examples) - Cardiac pacemakers - Metal clips on blood vessels (also called stents) - Artificial heart valves - Artificial arms, hands, legs, etc. - Brain stimulator devices - Implanted drug pumps - Ear implants - Eye implants or known metal fragments in eyes - Exposure to shrapnel or metal filings (wounded in military combat, sheet metal workers, welders, and others) - Other metallic surgical hardware in vital areas - Certain tattoos with metallic ink - Certain transdermal (skin) patches such as NicoDerm (nicotine for tobacco dependence), Transderm Scop (scopolamine for motion sickness), or Ortho Evra (birth control) - Past or present history of sleep or breathing-related disorders such as sleep apnea (exclusion upon obtaining a score of 3 or higher on the STOP-BANG questionnaire) - Travel outside the time zone within the two weeks prior to enrollment visit and at any point while active in the study - Self-reported major medical problems including past or present history of heart problems and/or neurological problems (to include but not limited to heart murmur, heart attack, TBI, stroke, tumor, epilepsy or another seizure disorder) - Self-reported past or present history of cardiovascular disease (to include but not limited to arrhythmias, valvular heart disease, congestive heart failure, history of sudden cardiac death or myocardial infarction) - Self-reported past or present history of neurological disorder (to include but not limited to traumatic brain injury including concussions, strokes, tumors, epilepsy or another seizure disorder, amnesia for any reason, hydrocephalus, multiple sclerosis) - Self-reported past or present history of any seizures or seizure disorders - Self-reported first-degree family history (like a mother, father, or sibling) of a seizure or seizure disorder - Self-reported underlying acute or chronic pulmonary disease requiring daily inhaler use - Self-reported history of fainting spells or syncope - Self-reported past (at any point in the participant's history) or present psychiatric problems not including depression and/or anxiety disorders (to include but not limited to bipolar, mania, ADHD, or psychotic disorders) - Self-reported history of depression and/or anxiety disorders within the past 2 years - Self-reported suicidal ideation as indicated by a score equal to or greater than 2 on the BDI - Self-reported current use of certain prescription medications including Ambien, benzodiazepines, stimulants (amphetamines, medication for narcolepsy), antidepressants (SSRIs, SNRIs), antipsychotics, blood pressure medications, thyroid medications. - Self-reported current use of supplements that may affect sleep (to include but not limited to melatonin, valerian root, kava root) - Self-reported caffeine use in excess of 300 mg (e.g., approximately 8 caffeinated sodas or approximately 3-4 12-oz cups of coffee) per day on average - Self-reported or suspected regular nicotine use (or addiction) (defined as more than 1 cigarette or equivalent per week within the last 1 year) - Self-reported or suspected heavy alcohol use (minimum limit to define heavy alcohol use is 14 drinks per week) - Self-reported or suspected use of illicit drugs (to include but not limited to benzodiazepines, amphetamines, cocaine, opioids) - (Females only) Positive urine pregnancy result (Urine HCG Test results) - (Females only) Self-reported or suspected current breast-feeding or collecting breast-milk - Learned English past age 3 - Speaking English as a non-primary language - Less than 9th grade education - Unusual sleep schedules in past six months - Overnight shift work - Inability to read and sign consent - Failure to cooperate with requirements of the study |
Country | Name | City | State |
---|---|---|---|
United States | University of Arizona Psychiatry Department | Tucson | Arizona |
Lead Sponsor | Collaborator |
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University of Arizona |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Within-subject changes in functional connectivity and brain metabolites following administration of active or sham cTBS TMS - day 8 | Measure neurochemistry in anterior cingulate and occipitoparietal cortex using spectroscopy during MRI scan | Once during Overnight Visit 1 pre-TMS MRI scan session (day 8) | |
Primary | Within-subject changes in functional connectivity and brain metabolites following administration of active or sham cTBS TMS - day 8 | Measure neurochemistry in anterior cingulate and occipitoparietal cortex using spectroscopy during MRI scan | Once during Overnight Visit 1 post-TMS MRI scan session (day 8) | |
Primary | Within-subject changes in functional connectivity and brain metabolites following administration of active or sham cTBS TMS - day 15 | Measure neurochemistry in anterior cingulate and occipitoparietal cortex using spectroscopy during MRI scan | Once during Overnight Visit 2 pre-TMS MRI scan session (day 15) | |
Primary | Within-subject changes in functional connectivity and brain metabolites following administration of active or sham cTBS TMS - day 15 | Measure neurochemistry in anterior cingulate and occipitoparietal cortex using spectroscopy during MRI scan | Once during Overnight 2 post-TMS MRI scan session (day 15) | |
Primary | Sleep onset latency (SOL) following administration of active or sham cTBS TMS - day 8 | Sleep period polysomnographic (PSG) measurement | During in-lab periods while sleeping during Overnight Visit 1 (day 8-9) | |
Primary | Sleep onset latency (SOL) following administration of active or sham cTBS TMS | Sleep period polysomnographic (PSG) measurement day 15 | During in-lab periods while sleeping during Overnight Visit 2 (day 15-16) | |
Primary | Total sleep time (TST) following administration of active or sham cTBS TMS - day 8-9 | Sleep period polysomnographic (PSG) measurement | During in-lab periods while sleeping during Overnight Visit 1 (day 8-9) | |
Primary | Total sleep time (TST) following administration of active or sham cTBS TMS - day 15-16 | Sleep period polysomnographic (PSG) measurement | During in-lab periods while sleeping during Overnight Visit 2 (day 15-16) | |
Primary | Sleep efficiency (SE) following administration of active or sham cTBS TMS - day 8-9 | Sleep period polysomnographic (PSG) measurement | During in-lab periods while sleeping during Overnight Visit 1 (day 8-9) | |
Primary | Sleep efficiency (SE) following administration of active or sham cTBS TMS - day 8-9 | Sleep period polysomnographic (PSG) measurement | During in-lab periods while sleeping during Overnight Visit 2 (day 15-16) | |
Primary | Wake after sleep onset (WASO) following administration of active or sham cTBS TMS - day 8-9 | Sleep period polysomnographic (PSG) measurement | During in-lab periods while sleeping during Overnight Visit 1 (day 8-9) | |
Primary | Wake after sleep onset (WASO) following administration of active or sham cTBS TMS - day 15-16 | Sleep period polysomnographic (PSG) measurement | During in-lab periods while sleeping during Overnight Visit 2 (day 15-16) | |
Primary | Time spent in each sleep stage following administration of active or sham cTBS TMS | Sleep period polysomnographic (PSG) measurement (time) day 8 | During in-lab periods while sleeping during Overnight Visit 1 (day 8-9) | |
Primary | Percentage of time spent in each sleep stage following administration of active or sham cTBS TMS | Sleep period polysomnographic (PSG) measurement (percentage of time) day 8 | During in-lab periods while sleeping during Overnight Visit 1 (day 8-9) | |
Primary | Time spent in each sleep stage following administration of active or sham cTBS TMS | Sleep period polysomnographic (PSG) measurement (time) day 15 | During in-lab periods while sleeping during Overnight Visit 2 (day 15-16) | |
Primary | Percentage of time spent in each sleep stage following administration of active or sham cTBS TMS | Sleep period polysomnographic (PSG) measurement (percentage of time) day 15 | During in-lab periods while sleeping during Overnight Visit 2 (day 15-16) | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 8, admin 1 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Once during cognitive testing portion of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 8, admin 2 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration during cognitive testing portion of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 8, admin 3 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration (2 hours after initial) during cognitive testing portion of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 9, admin 4 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Once during cognitive testing portion of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 9, admin 5 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration during cognitive testing portion of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 9, admin 6 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration (2 hours after initial) during cognitive testing portion of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 15, admin 1 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Once during cognitive testing portion of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 15, admin 2 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration during cognitive testing portion of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 15, admin 3 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration (2 hours after initial) during cognitive testing portion of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 16, admin 4 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Once during cognitive testing portion of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 16, admin 5 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration during cognitive testing portion of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Karolinska Sleepiness Scale (KSS) - day 16, admin 6 | To evaluate effects of sleep schedule on subjective sleepiness. Volunteers are presented with a 9-point sleepiness scale on a computer monitor (1=very alert, 3=alert, 5=neither alert nor sleepy, 7=sleepy (but not fighting sleep), 9=very sleepy (fighting sleep) and select the number on the scale that best reflects their current level of subjective sleepiness. | Approximately one hour after previous administration (2 hours after initial) during cognitive testing portion of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 1, admin 1 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Once during cognitive testing on Enrollment day (day 1) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 1, admin 1 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Once during cognitive testing on Enrollment day (day 1) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 1, admin 1 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Once during cognitive testing on Enrollment day (day 1) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 1, admin 2 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration during cognitive testing on Enrollment day (day 1) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 1, admin 2 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration during cognitive testing on Enrollment day (day 1) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 1, admin 2 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration during cognitive testing on Enrollment day (day 1) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 3 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Once during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 3 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Once during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 3 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Once during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 9 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Once during cognitive testing of Overnight Visit 2 (day 15) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 9 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Once during cognitive testing of Overnight Visit 2 (day 15) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 9 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Once during cognitive testing of Overnight Visit 2 (day 15) | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 4 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 4 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 4 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 10 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 10 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 10 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 5 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 5 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 8, admin 5 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 1 (day 8-9), day 8 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 11 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 11 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 15, admin 11 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 2 (day 15-16), day 15 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 6 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Once during cognitive testing during Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 6 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Once during cognitive testing during Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 6 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Once during cognitive testing during Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 12 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Once during cognitive testing during Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 12 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Once during cognitive testing during Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 12 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Once during cognitive testing during Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 7 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 7 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 7 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 12 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 12 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 12 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration during cognitive testing of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 8 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 8 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 9, admin 8 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 1 (day 8-9), day 9 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 13 (mean RT) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean RT (ms) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 13 (mean Speed) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Mean Speed (s-1) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Psychomotor Vigilance Tests (PVT) - day 16, admin 13 (Lapses) | To assess the effects of sleep loss on visual reaction time as a behavioral measure of sleepiness, participants continuously monitor a blank display and click a keyboard button as quickly as possible in response to a visual stimulus (i.e. an "X" that appears on the computer screen). Lapses (#) | Approximately one hour after previous administration (2 hours after initial) during cognitive testing of Overnight Visit 2 (day 15-16), day 16 | |
Secondary | Spielberger State-Trait Anxiety Inventory - State (STAI-S) - day 1 | Used to identify state changes in anxiety in healthy adults. Volunteers are instructed to rate on a four-point scale how closely they identify with 20 statements related to state anxiety. State anxiety level (20-80), higher scores indicate greater state anxiety. | During cognitive testing portion of Enrollment Day (day 1) | |
Secondary | Spielberger State-Trait Anxiety Inventory - State (STAI-S) - day 8 | Used to identify state changes in anxiety in healthy adults. Volunteers are instructed to rate on a four-point scale how closely they identify with 20 statements related to state anxiety. State anxiety level (20-80), higher scores indicate greater state anxiety. | During cognitive testing portion of Overnight Visit 1 (day 8) | |
Secondary | Spielberger State-Trait Anxiety Inventory - State (STAI-S) - day 15 | Used to identify state changes in anxiety in healthy adults. Volunteers are instructed to rate on a four-point scale how closely they identify with 20 statements related to state anxiety. State anxiety level (20-80), higher scores indicate greater state anxiety. | During cognitive testing portion of Overnight Visit 2 (day 15) | |
Secondary | Actigraphy | To determine amount and timing of sleep/wake periods during all phases of the study. Except for epochs that may be removed manually if they are determined to contain artifact, actigraphy records will be automatically scored by computer as either "sleep" or "wake" using the algorithms provided by the various manufacturers. Wear the one actigraph (approximately the size of a diver's wristwatch) continuously across all study phases, including at home. | Throughout the entire study, except during MRI and TMS administration - up to 14 days | |
Secondary | Glasgow Content of Thoughts Inventory (GCTI) - day 1 | Evaluate the content, character, and intrusiveness of cognitions in the moments prior to sleep onset, specifically in those with insomnia. Rate 25 statements on a scale from 1 ("never") to 4 ("always"). Level of intrusive thoughts prior to sleep (25-100) with higher scores indicating more intrusive cognitions. | During cognitive testing portion of Enrollment Day (day 1) | |
Secondary | Glasgow Content of Thoughts Inventory (GCTI) - day 8 | Evaluate the content, character, and intrusiveness of cognitions in the moments prior to sleep onset, specifically in those with insomnia. Rate 25 statements on a scale from 1 ("never") to 4 ("always"). Level of intrusive thoughts prior to sleep (25-100) with higher scores indicating more intrusive cognitions. | During cognitive testing portion of Overnight Visit 1 (day 8) | |
Secondary | Glasgow Content of Thoughts Inventory (GCTI) - day 15 | Evaluate the content, character, and intrusiveness of cognitions in the moments prior to sleep onset, specifically in those with insomnia. Rate 25 statements on a scale from 1 ("never") to 4 ("always"). Level of intrusive thoughts prior to sleep (25-100) with higher scores indicating more intrusive cognitions. | During cognitive testing portion of Overnight Visit 2 (day 15) | |
Secondary | Visual Analog Mood Scale (VAMS) - day 8, admin 1 | Brief measure of subjective mood. Participants will be presented with eight specific mood states: Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense. For each scale, a neutral schematic face is at the top of 100mm vertical line, with a mood face at the bottom of the line. Participants draw a line on the scale that best describes how they are currently feeling. Subjective mood for each of eight mood states (Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense). | During evening of Overnight Visit 1 (day 8) | |
Secondary | Visual Analog Mood Scale (VAMS) - day 9, admin 2 | Brief measure of subjective mood. Participants will be presented with eight specific mood states: Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense. For each scale, a neutral schematic face is at the top of 100mm vertical line, with a mood face at the bottom of the line. Participants draw a line on the scale that best describes how they are currently feeling. Subjective mood for each of eight mood states (Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense). | During morning of Overnight Visit 1 (day 9) | |
Secondary | Visual Analog Mood Scale (VAMS) - day 15, admin 1 | Brief measure of subjective mood. Participants will be presented with eight specific mood states: Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense. For each scale, a neutral schematic face is at the top of 100mm vertical line, with a mood face at the bottom of the line. Participants draw a line on the scale that best describes how they are currently feeling. Subjective mood for each of eight mood states (Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense). | During evening of Overnight Visit 2 (day 15) | |
Secondary | Visual Analog Mood Scale (VAMS) - day 16, admin 2 | Brief measure of subjective mood. Participants will be presented with eight specific mood states: Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense. For each scale, a neutral schematic face is at the top of 100mm vertical line, with a mood face at the bottom of the line. Participants draw a line on the scale that best describes how they are currently feeling. Subjective mood for each of eight mood states (Afraid, Confused, Sad, Angry, Energetic, Tired, Happy, and Tense). | During morning of Overnight Visit 2 (day 16) | |
Secondary | California Verbal Learning Test Third Edition (CVLT-3) - day 8-9 | To assess verbal memory and learning. Volunteers will listen to a series of words during cognitive testing on the first day of their overnight visits. On the second day of their overnight visit, they will be asked to recall the list of words and which category each word belongs to. | Learn the list and recall the list once during Overnight Visit 1 (day 8-9) | |
Secondary | California Verbal Learning Test Third Edition (CVLT-3) - day 15-16 | To assess verbal memory and learning. Volunteers will listen to a series of words during cognitive testing on the first day of their overnight visits. On the second day of their overnight visit, they will be asked to recall the list of words and which category each word belongs to. | Learn the list and recall the list once during Overnight Visit 2 (day 15-16) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Attention Digit Span - day 8, admin 1 | To measure auditory registration and attention. The examiner reads aloud a set of numbers and asks the participant to repeat them back to them. The examinee repeats them back verbally. Participant is scored based on correctly repeating back the string of numbers (2 points for getting it right on the first trial using the Repeatable Battery for the Assessment of Neuropsychological Status Attention Digit Span scale (0-16, higher number indicates better outcome) | During the evening cognitive testing on Overnight Visit 1 (day 8) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Attention Digit Span - day 15, admin 1 | To measure auditory registration and attention. The examiner reads aloud a set of numbers and asks the participant to repeat them back to them. The examinee repeats them back verbally. Participant is scored based on correctly repeating back the string of numbers (2 points for getting it right on the first trial using the Repeatable Battery for the Assessment of Neuropsychological Status Attention Digit Span scale (0-16, higher number indicates better outcome). | During the evening cognitive testing on Overnight Visit 2 (day 15) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Attention Digit Span - day 9, admin 2 | To measure auditory registration and attention. The examiner reads aloud a set of numbers and asks the participant to repeat them back to them. The examinee repeats them back verbally. Participant is scored based on correctly repeating back the string of numbers (2 points for getting it right on the first trial using the Repeatable Battery for the Assessment of Neuropsychological Status Attention Digit Span scale (0-16, higher number indicates better outcome). | During the morning cognitive testing on Overnight Visit 1 (day 9) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Attention Digit Span - day 16, admin 2 | To measure auditory registration and attention. The examiner reads aloud a set of numbers and asks the participant to repeat them back to them. The examinee repeats them back verbally. Participant is scored based on correctly repeating back the string of numbers (2 points for getting it right on the first trial using the Repeatable Battery for the Assessment of Neuropsychological Status Attention Digit Span scale (0-16, higher number indicates better outcome). | During the morning cognitive testing on Overnight Visit 2 (day 16) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Delayed Memory Story Recall - day 8, admin 1 | To measure delayed recall and recognition for verbal information.The examiner reads a short story aloud to the participant, then later, the participant is asked to recall the story in as much detail as possible. Participant is scored based on the number of units of information correctly recalled using the Repeatable Battery for the Assessment of Neuropsychological Status Delayed Story Memory scale (0-12, higher number indicates better outcome). | During the evening cognitive testing on Overnight Visit 1 (day 8) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Story Memory Recall - day 8 | To measure delayed recall and recognition for verbal information. The examiner reads a short story aloud to the participant and then the participant is asked to recall the story in as much detail as possible. This is repeated twice. The Participant is scored based on the number of units of information correctly recalled using the Repeatable Battery for the Assessment of Neuropsychological Status Story Memory scale (0-24, higher number indicates better outcome). | During the evening cognitive testing on Overnight Visit 1 (day 8) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Delayed Memory Story Recall - day 15, admin 1 | To measure delayed recall and recognition for verbal information.The examiner reads a short story aloud to the participant, then later, the participant is asked to recall the story in as much detail as possible. Participant is scored based on the number of units of information correctly recalled using the Repeatable Battery for the Assessment of Neuropsychological Status Delayed Story Memory scale (0-12, higher number indicates better outcome). | During the evening cognitive testing on Overnight Visit 2 (day 15) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Story Memory Recall - day 15 | To measure delayed recall and recognition for verbal information. The examiner reads a short story aloud to the participant and then the participant is asked to recall the story in as much detail as possible. This is repeated twice. The Participant is scored based on the number of units of information correctly recalled using the Repeatable Battery for the Assessment of Neuropsychological Status Story Memory scale (0-24, higher number indicates better outcome). | During the evening cognitive testing on Overnight Visit 2 (day 15) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Delayed Memory Story Recall - day 9, admin 2 | To measure delayed recall and recognition for verbal information.The examiner reads a short story aloud to the participant, then later, the participant is asked to recall the story in as much detail as possible. Participant is scored based on the number of units of information correctly recalled using the Repeatable Battery for the Assessment of Neuropsychological Status Delayed Story Memory scale (0-12, higher number indicates better outcome). | During the morning cognitive testing on Overnight Visit 1 (day 9) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Delayed Memory Story Recall - day 16, admin 2 | To measure delayed recall and recognition for verbal information.The examiner reads a short story aloud to the participant, then later, the participant is asked to recall the story in as much detail as possible. Participant is scored based on the number of units of information correctly recalled using the Repeatable Battery for the Assessment of Neuropsychological Status Delayed Story Memory scale (0-12, higher number indicates better outcome). | During the morning cognitive testing on Overnight Visit 2 (day 16) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Symbol-Digit Test - day 8, admin 1 | To assess tracking and motor speed, divided attention, and visual scanning. Participants will be given a simple substitution task to pair specific numbers with provided geometric figures. Participant is scored based on the number of correct answers using the Repeatable Battery for the Assessment of Neuropsychological Status Symbol-Digit scale (0-89, higher number indicates better outcome). | During the evening cognitive testing on Overnight Visit 1 (day 8) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Symbol-Digit Test - day 15, admin 1 | To assess tracking and motor speed, divided attention, and visual scanning. Participants will be given a simple substitution task to pair specific numbers with provided geometric figures. Participant is scored based on the number of correct answers using the Repeatable Battery for the Assessment of Neuropsychological Status Symbol-Digit scale (0-89, higher number indicates better outcome). | During the evening cognitive testing on Overnight Visit 2 (day 15) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Symbol-Digit Test - day 9, admin 2 | To assess tracking and motor speed, divided attention, and visual scanning. Participants will be given a simple substitution task to pair specific numbers with provided geometric figures. Participant is scored based on the number of correct answers using the Repeatable Battery for the Assessment of Neuropsychological Status Symbol-Digit scale (0-89, higher number indicates better outcome). | During the morning cognitive testing on Overnight Visit 1 (day 9) | |
Secondary | Repeatable Battery for Neuropsychological Status (RBANS) - Symbol-Digit Test - day 16, admin 2 | To assess tracking and motor speed, divided attention, and visual scanning. Participants will be given a simple substitution task to pair specific numbers with provided geometric figures. Participant is scored based on the number of correct answers using the Repeatable Battery for the Assessment of Neuropsychological Status Symbol-Digit scale (0-89, higher number indicates better outcome). | During the morning cognitive testing on Overnight Visit 2 (day 16) | |
Secondary | Visual Attention Task (VAT) - day 8, admin 1 | To assess default mode network connectivity during a visual attention task. While inside the 3T scanner, participants will identify global and local letters from visually presented stimuli. This task will be administered pre-TMS and trials will be randomized to prevent task habituation. Participant is scored based on the number of correct responses they provide (0-192, higher number indicates better outcome). | Once during pre-TMS MRI scan on evening of Overnight Visit 1 (day 8) | |
Secondary | Visual Attention Task (VAT) - day 8, admin 2 | To assess default mode network connectivity during a visual attention task. While inside the 3T scanner, participants will identify global and local letters from visually presented stimuli. This task will be administered post-TMS and trials will be randomized to prevent task habituation. Participant is scored based on the number of correct responses they provide (0-192, higher number indicates better outcome). | Once during post-TMS MRI scan on evening of Overnight Visit 1 (day 8) | |
Secondary | Visual Attention Task (VAT) - day 15, admin 1 | To assess default mode network connectivity during a visual attention task. While inside the 3T scanner, participants will identify global and local letters from visually presented stimuli. This task will be administered pre-TMS and trials will be randomized to prevent task habituation. Participant is scored based on the number of correct responses they provide (0-192, higher number indicates better outcome). | Once during pre-TMS MRI scan on evening of Overnight Visit 2 (day 15) | |
Secondary | Visual Attention Task (VAT) - day 15, admin 2 | To assess default mode network connectivity during a visual attention task. While inside the 3T scanner, participants will identify global and local letters from visually presented stimuli. This task will be administered post-TMS and trials will be randomized to prevent task habituation. Participant is scored based on the number of correct responses they provide (0-192, higher number indicates better outcome). | Once during post-TMS MRI scan on evening of Overnight Visit 2 (day 15) | |
Secondary | Multi-Source Interference Task (MSIT) - day 8, admin 1 | To assess default mode network connectivity during a visual interference task. Use index, middle, or ring finger to press button that indicates the spatial location of the "number 1" on the screen. In the "interference" condition, participants will see three numbers, two of which are the same, and they will use the same buttons to choose the number that is different. This is administered pre-TMS. | Once during pre-TMS scan on evening of Overnight Visit 1 (day 8) | |
Secondary | Multi-Source Interference Task (MSIT) - day 8, admin 2 | To assess default mode network connectivity during a visual interference task. Use index, middle, or ring finger to press button that indicates the spatial location of the "number 1" on the screen. In the "interference" condition, participants will see three numbers, two of which are the same, and they will use the same buttons to choose the number that is different. This is administered post-TMS. | Once during post-TMS scan on evening of Overnight Visit 1 (day 8) | |
Secondary | Multi-Source Interference Task (MSIT) - day 15, admin 1 | To assess default mode network connectivity during a visual interference task. Use index, middle, or ring finger to press button that indicates the spatial location of the "number 1" on the screen. In the "interference" condition, participants will see three numbers, two of which are the same, and they will use the same buttons to choose the number that is different. This is administered pre-TMS. | Once during pre-TMS scan on evening of Overnight Visit 2 (day 15) | |
Secondary | Multi-Source Interference Task (MSIT) - day 15, admin 2 | To assess default mode network connectivity during a visual interference task. Use index, middle, or ring finger to press button that indicates the spatial location of the "number 1" on the screen. In the "interference" condition, participants will see three numbers, two of which are the same, and they will use the same buttons to choose the number that is different. This is administered post-TMS. | Once during post-TMS scan on evening of Overnight Visit 2 (day 15) |
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