View clinical trials related to Sleep.
Filter by:This study is a first step in approaching the gap existing between understanding sleep abnormalities, alterations in sleep-regulating cytokines and HIV-1 disease regulating cytokines, and abnormal higher cortical function.
The objective is to investigate residual effects of heavy drinking, with or without hangover symptoms. The primary aim is to test several hypotheses about residual effects of heavy drinking. Hypotheses about how heavy drinking affects next-day performance include direct physiological effects of alcohol, alcohol withdrawal effects, and non-ethanol effects, such as congeners, or family history of alcohol problems. The investigators will test the following hypotheses: 1. relative to placebo, heavy drinking will degrade next-day performance, and this relationship will be mediated in full or in part by quality of sleep; 2. a high congener alcoholic beverage will affect performance to a greater degree than a low congener beverage and this relationship will be mediated by severity of hangover symptoms.
The purpose of this research is to study and improve the methods used to detect childhood breathing problems during sleep that can affect daytime behavior at home and school. Early diagnosis of these sleep disorders may allow doctors to treat children at a time when the consequences can still be reversed.
This project is being done in order to determine if the music of Mozart will have a soothing effect on premature infants while in the neonatal intensive care unit (NICU). The primary effect to be anticipated will be a reduction in heart rate from baseline, decreased motor activity from baseline, as well as an increase of time in which the babies are in quiet sleep states while the music is being played. Upon admission, all infants in the NICU are placed on monitors that continuously track their heart rate, respiratory rate, and oxygen saturation. During our study, data will be collected from the monitors already in use. Total time of observation will be approximately 3 hours. In addition, a monitoring device called an Actiwatch will also be used. This device looks similar to a traditional wristwatch and will be loosely strapped to the ankle or wrist of each infant using a foam and velcro strap. This device continuously monitors the baby's movements allowing us to determine if there is a change in the baby's activity level while the music is being played. It will record the baby's activity prior to the start of the music and will continue until 30 minutes after the music has stopped. The music of Mozart will be played using a small speaker in the baby's isolette. The volume of the music will be set at 10 decibels over background noise, which on previous measurement has been found to be approximately 55 decibels (about the same as a running refrigerator or as the sound of rainfall; 60 decibels is the volume of normal conversation). The volume in the crib will be continuously monitored throughout the hour. As a final recording device, we will also intermittently be using video to capture the reactions of these infants to the music. The study will be done once a week per infant on the same day and at the same time every week
The purpose of this study is to identify specific chemotherapy-related changes in sleep stages/architecture that may relate to an increase in fatigue in individuals with cancer. The researchers hypothesize that the fatigue experienced by cancer patients receiving chemotherapy is in part due to changes in restorative sleeping during the non-rapid eye movement cycles of sleep (i.e., delta activity).
The purpose of this study is to see whether protecting sleep quality in later life is important in continued healthy aging. The value of education in healthy sleep practices along with reducing time in bed each night by going to bed 30 minutes later, and of healthy dietary practices will be tested for their effects on sleep quality, health, and well being.
This study will investigate the spatio-temporal characteristics of brain activity during sleep. Functional magnetic resonance imaging (fMRI) studies have shown that in the absence of external stimuli, the brain continues to show spatial patterns of activity that resemble those during sensory and cognitive tasks. This phenomenon greatly affects the interpretation of neuroimaging studies based on positive emission tomography (PET) and fMRI, which rely on the contrast between brain activity during a task and activity during rest. In addition, resting state activity in itself may reveal information on the large-scale organization of neuronal networks and on functional abnormalities related to disease. Participants should represent a broad cross section of the healthy adult population. Any neurologically and psychiatrically healthy male or nonpregnant female between 18 and 65 years old may be eligible. Studies will be conducted in the In Vivo NMR Research Center. Concurrent electroencephalogram (EEG) and MRI studies will last between 1 and 2 hours. A typical study involves 15 minutes of anatomical MRI scanning followed by a 60-minute functional scan during which the subject relaxes with eyes closed and is encouraged to sleep while the fMRI/EEG are performed. Participants may be scanned 1 to 20 times. No more than 1 scan will be performed per day and no more than 20 scans will be performed within a year. During the last 5 to 10 minutes of the scan, the participant will open his or her eyes and actively participate in a visual stimulation or attention task. The participant's alertness will be measured by a behavioral (button-press) response. The visual stimuli (contrast reversing checkerboard displays, alternated with uniform grey fields) will be presented using the standard projection system available with the MRI scanner. The attention task will involve repeated visual presentation of groups of letters and digits; the participant will be asked about the correspondence between these groups. Magnetoencephalogram (MEG) scans will be performed on some participants. The precise and undistorted signals available with MEG will be used to enhance the interpretation of alertness and sleep-related characteristics of the EEG signals, which can vary quite dramatically across subjects. In addition, the MEG signals will provide preliminary spatial localization of the sleep-dependent changes more precisely than is possible with EEG. MRI scanner noise will be simulated using tape recordings to allow comparison with the MRI/EEG data. MEG scans will last 45 minutes to 2 hours. At all times during any of the brain scans the participant will be able to communicate the MRI scientist or MEG/EEG technician and can ask to be removed from the device at any time. The study will not have a direct benefit for participants. It may be help us learn more about brain function, which may lead to better treatments.
To determine the effects of sleep disorders on cardiovascular function and disease in older men.
The purpose of this study is to determine the effectiveness of nasal continuous positive airway pressure (CPAP) therapy for the treatment of obstructive sleep apnea syndrome (OSAS).
to develop the maximally effective treatment strategy for chronic sleep-onset insomnia and to reduce its impact on psychological functioning, health, and economic sequelae.