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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01960452
Other study ID # 2013-1613
Secondary ID HSC-2013-0019
Status Completed
Phase N/A
First received October 4, 2013
Last updated December 15, 2017
Start date October 2013
Est. completion date September 2017

Study information

Verified date December 2017
Source University of Wisconsin, Madison
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Insomnia, defined as a subjective report of difficulty initiating sleep, maintaining sleep, and/or non-restorative sleep, leads to significant daytime dysfunction and increased health risks. A commonly held hypothesis is that insomnia is caused by a state of hyperarousal, but the neurobiological mechanisms of hyperarousal in insomnia are poorly understood, in part because of limitations in our ability to image the brain during normal human sleep with sufficient temporal resolution. Furthermore, the efficacy of insomnia treatment is judged by subjective report of the patient and demonstration of changes in sleep latency and/or sleep amount which are generally small in magnitude; there are currently no data to demonstrate that insomnia treatments correct any functional abnormalities in the sleep process that likely contribute to neurobehavioral abnormalities and health risks. The goals of the proposed study are to use high density EEG to define abnormalities in specific aspects of sleep in insomnia patients compared to healthy sleeping control subjects to define biomarkers that will both increase our understanding of the pathophysiology of insomnia as well as provide targets to assess treatments for insomnia.


Recruitment information / eligibility

Status Completed
Enrollment 45
Est. completion date September 2017
Est. primary completion date September 2017
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 45 Years
Eligibility Inclusion Criteria:

- 18-45 years old

- English speaking, reading, and writing

- For control subjects: Insomnia Severity Index (ISI) less than or equal to 6 and does not meet criteria for insomnia

- For insomnia subjects: ISI greater than or equal to 7, meets criteria for insomnia, and reports insomnia symptoms for at least 6 months

Exclusion Criteria:

- Imminent danger to self or others

- Clinical diagnosis of dementia

- Active Diagnostic and Statistical Manual of Mental Disorders (DSM)-IV Axis I disorder or alcohol or drug dependence or abuse

- Other sleep disorders aside from insomnia

- History of significant head trauma or loss of consciousness over 30 minutes

- Regular use of psychotropic medications in past 4 weeks

- Regular tobacco use

- Drinking more than 3 caffeinated beverages per day

- Significant neurological or medical illness

- Pregnant, less than 6 months post-partum, or planning to become pregnant during the study

- Left-handedness

- Body Mass Index (BMI) greater than 40

- Apnea Hypopnea Index (AHI) greater than 10 on Apnea Link

- Mini mental status exam score less than 27

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
Serial awakenings
The first study night will be a baseline sleep recording. The second night will consist of a series of awakenings (using auditory tones) and subsequent periods of falling back asleep in order to examine the cortical dynamics of hyperarousal or other dysfunction during these two critical sleep processes in insomnia.

Locations

Country Name City State
United States University of Wisconsin, Madison Madison Wisconsin

Sponsors (2)

Lead Sponsor Collaborator
University of Wisconsin, Madison Merck Sharp & Dohme Corp.

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Topographic sleep EEG power EEG recordings will be analyzed to assess the cortical source of EEG power during sleep . Individual night of sleep recorded on average within 4 weeks of enrollment
Primary Topographic EEG power prior to nocturnal arousal EEG power examined before arousal from sleep 1 night after baseline sleep EEG recording
Primary Topographic EEG power during falling asleep period EEG power examined as subjects fall asleep 1 night after baseline sleep EEG recording
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