Active clinical trials for "Sleep Deprivation"

Investigators will recruit up to 100 families (children aged 8-12 years and their primary caregivers) from the Philadelphia-area Beds for Kids charity program, which provides beds, bedding, and sleep education to lower-socioeconomic status (SES) children. The primary objective of this randomized controlled trial is to determine whether bed provision combined with provider-delivered sleep health education can improve sleep in children participating in the Beds for Kids program.

The goal of this clinical trial is to systematically investigate two prominent factors in teenagers' daily life: Caffeine and sleep restriction (SR) and their combined influence on sleep, cognition, and behavior in healthy adolescents. The main questions it aims to answer are: The effects of caffeine under conditions of SR and SE: on sleep pressure and sleep continuity. on BOLD activity differences in reward related areas during a reward task (monetary incentive delay task) and on reaction times (behavioral aspect) in the same task. on BOLD activity differences during a risk taking task (wheel of fortune task) and on risky decision-making (behavioral aspect) in the same task. Participants will be either in the SR or SE condition (between-subject). The protocol consists of 2x of approximately one week in which a participant will receive caffeine or placebo (within-subject) at the last two evenings. The experiment consists of an ambulatory and a laboratory phase: The ambulatory phase consists of 5 nights, including 3 stabilization nights (8h sleep opportunity) prior to 2 nights consisting of either SR with 6h sleep opportunity or SE with 9.5h sleep opportunity. Participants will wear an actiwatch and fill out sleep diaries during this period. The laboratory phase will be the 6th evening, night and morning of the protocol and will be spent in our lab. Participants will do the following: treatment (caffeine vs. placebo) intake saliva sampling drug screening cognitive tests, including risk-taking and reward task filling in questionnaires (sleep diary, sleep quality, sleepiness, mood, expectancy) waking and sleep with EEG The next day, participants will undergo an fMRI scan, including the following: resting-state scan structural scan arterial spin labeling scan reward task scan risk-taking task scan Around the scan, participants will fill out/undergo: saliva sampling questionnaires (reward task, mood, sleepiness, expectancy)

The goal of this cross-over clinical trial is to evaluate the effect of 24 hours sleep deprivation on the Vestibulo-Ocular Reflex (VOR) in healthy participants. The main questions it aims to answer are: The effect of sleep deprivation on vestibular function. The difference between passive and active VOR function following sleep deprivation. The vergence mediated modulation ability of the VOR following sleep deprivation. The effect of sleep deprivation on behavioral VOR function. Participants will be tested before and after a normal night sleep and during 24 hours of sleep deprivation.

To further understand the impact of acute sleep deprivation and recovery sleep on the processing of emotional information the investigators will address and attempt to answer three questions, (i) how both undisturbed sleep and sleep deprivation affect the processing and retrieval of emotional information, (ii) what neural and psychophysiological mechanisms are associated with these behavioral effects, and (iii) to explore the ability of recovery sleep to reverse the effects of sleep deprivation. Together, these studies will provide a greater breadth and depth of knowledge concerning sleep's role in emotion processing and regulation. Given the growing societal tendency to view sleep as unproductive-foregoing it to lengthen work days and increase social opportunities- such knowledge would be of practical importance for understanding the role of sleep in healthy emotional functioning, particular for individuals experiencing periods of increased stress and emotional distress (e.g., new parents, hospital staff, or combat troops).

This study aims to investigate the effect of a 15-minute meditation practice on sleep architecture and high-frequency Heart Rate Variability (HF-HRV), as well as cognitive performance after both a well-rested and sleep-deprived night.

Neurofeedback is a cognitive remediation technique that allows a subject to learn to regulate their cognitive and brain activity through information provided in real time about their brain activity, in particular electroencephalographic (EEG) brain activity. Neurofeedback could, through its impact on the degree of neuronal synchronization, help to reduce the impact of sleep deprivation on wakefulness and cognitive performance. The main objective is to study the effect of a program of 8 sessions of neurofeedback targeting EEG theta / beta activities, to modify the degree of neuronal synchronization, on the ability to maintain objective wakefulness measured by a maintenance wakefulness test (MWT) in healthy subjects presenting objective excessive daytime sleepiness after a full night of sleep deprivation under controlled experimental conditions. The objective of this study will also provide a better understanding of the learning modulation mechanisms of arousal systems.

This project is designed to test for the first time whether glucose metabolism is differentially impaired by sleep restriction with and without additional exposure to artificial light at night (ALAN).

This study aims at measuring the impact of a night of sleep deprivation over the vocal characteristics of healthy subjects.To do so, the subjects takes a Multiple Sleep Latency Test (MSLT) the day after a night of total sleep deprivation (or a supervised normal night for the control subjects). Before each iteration of the MSLT, the subjects are recorded during the reading of a text and fill three medical questionnaires : Karolinska Sleepiness Scale (KSS), Visual Analogue Scale for Fatigue (VAS-F) and Visual Analogue Scale for Anxiety (VAS-A), allowing to link variations of vocal markers to the variations of these measures.

The goal of this study is to uncover sleep and circadian mechanisms contributing to adverse metabolic health. The protocol is a 21 day (7 outpatient days, 14 inpatient days) mechanistic randomized-crossover study designed to identify the impact of chronic sleep restriction and circadian timing, independently and in combination on energy metabolism and identify the independent and combined effects on glucose tolerance.

Sleep deprivation has long been thought to modulate thermoregulatory function. Seminal work on sleep deprivation and thermoregulation has demonstrated that sleep-deprived individuals experience greater elevations in core temperature during exercise-heat stress due to reductions in the activation of local heat loss responses of cutaneous vasodilation and sweating. However, it remains unclear 1) if reductions in local heat loss responses would compromise whole-body heat loss (evaporative + dry heat exchange) and 2) if differences exist, are they dependent on the heat load generated by exercise (increases in metabolic rate augments the rate that heat must be dissipated by the body). Further, much of the understanding of the effects of sleep deprivation on thermoregulation has been limited to assessments in young adults. Studies show that aging is associated with reduction in cutaneous vasodilation and sweating that compromise whole-body heat loss exacerbating body heat storage during moderate- and especially more vigorous-intensity exercise in the heat. However, it remains unclear if sleep deprivation may worsen this response in older adults. The purpose of this study is therefore to evaluate the effects of sleep-deprivation on whole-body total heat loss during light, moderate, and vigorous exercise-heat stress and to assess if aging may mediate this response. To achieve this objective, direct calorimetry will be employed to measure whole-body total heat loss in young (18-30 years) and older (50-65 years) men during exercise at increasing, fixed rates of metabolic heat production of 150 (light), 200 (moderate), and 250 W/m2 (vigorous) in dry heat (40°C, ~15% relative humidity) with and without 24 hours of sleep deprivation.