View clinical trials related to Sleep Deprivation.
Filter by:A large body of medical research has shown that sleep deprivation adversely affects outcomes ranging from cognitive function to pain sensitivity and cardiovascular function. Much of this evidence comes from sleep labs in the developed world, where sleep can be carefully manipulated, and short-run physiological and cognitive outcomes precisely measured. In contrast, there is much less knowledge about how sleep deprivation affects the health of individuals in the developing world, coming from a lack of studies outside the lab and over longer periods. This project aims to fill this gap. The investigators will implement a randomized controlled trial (RCT) with 450 low-income adults in Chennai, India, providing the first objective measurement of sleep in a developing country. The investigators will also evaluate scalable interventions to improve the sleep of poor adults, such as providing home sleep-aid devices and a comfortable space for a 30-minute afternoon nap at the participants' work site. Finally, the study aims to assess the impact of improved sleep on health, with a primary focus on cardiovascular health and cognitive outcomes.
The purpose of this study is to analyze a multi-component sleep/wake protocol for optimization of environmental factors (noise, light, nursing activities) as well as non-environmental factors (pain, mechanical support devices, procedures) to improve quality of sleep and decrease incidence of ICU delirium in the Cardiovascular and Surgical ICU (CVICU/SICU).
Metabolism is increasingly recognized as being highly regulated by anticipatory biological rhythms (circadian rhythms or "biorhythms"), which are driven by molecular feedback loops, and which are approximately 24 hours long ("circa diem"). These circadian rhythms exist both centrally, in the brain, but also in the periphery, and are specific to many tissues depending on their main biological function or functions. Whereas these circadian rhythms have been thoroughly characterized in other organisms, their role in humans remain poorly understood, partly because of the difficulty in studying these rhythms in peripheral tissues. The investigators therefore aim to characterize these rhythms in primarily skeletal muscle and adipose tissue in healthy young volunteers (using the so-called constant routine paradigm), and how these rhythms interact with one another at various genetic and molecular levels. At the same time, the investigators aim to study how an unhealthy vs. healthy diet can alter these circadian rhythms, and how they interact with circadian rhythms in other tissue compartments such as those expressed by blood cells.
To further understanding of the relationship between sleep and memory the investigators will address and attempt to answer three questions, (1) how memories evolve across wake and sleep, (2) how different aspects of this memory evolution are reflected both behaviorally and in the EEG signal, and (3) what stages and features of sleep affect memory evolution. Together, these studies will provide a greater breadth and depth of knowledge concerning sleep's role in memory consolidation. Such knowledge would be of practical importance for educational practices, whether in schools, on the job, or in the military, and would also provide valuable information to the fields of sleep medicine and psychiatry, where interactions between sleep disorders and cognitive functioning are of great importance.
Environmental factors such as noise and light have been cited as important causes of sleep deprivation in Intensive care unit (ICU) patients. Previous studies demonstrated a hyperalgesic alteration in pain perception following a controlled sleep deprivation protocol. Another studies indicated that using eye masks can improve REM sleep in healthy subjects in simulated ICU environment, and improve sleep quality in ICU patients. This study aimed to determine the effects of using eye masks on sleep and thus on pain quality in postoperative cardiac surgery patients in ICU.
The project will contribute with new knowledge concerning how aspects of the physical work environment (lighting conditions) can be arranged to facilitate the workers' adaptation to night work. This is important given the reported adverse consequences of shift work for performance, safety, and health. The project involves a series of three experimental, laboratory based shift work simulation studies. The aim is to investigate how different lighting conditions (intensities and colour temperature), administered through light emitting diode (LED) based bright light integrated standard room lighting, affects adaptation to three consecutive simulated night shifts and re adaptation to a day oriented schedule on measures of alertness, cognitive performance, sleep and circadian rhythm. The proposed project examines the effects of interventions that can be applied in naturalistic settings and will be based on new laboratory infrastructure available at the laboratories situated in the Faculty of Psychology, University of Bergen.
Study Objectives: THN102 is a new combination between modafinil and flecainide low-dose, a documented glial connexin inhibitor. Efficacy of THN102 was compared to modafinil and to placebo on parameters impaired by total sleep deprivation (SD, lasting 40h). Methods: 20 healthy male subjects participated in a double-blind, randomised, incomplete-block 3-period cross-over trial involving 5 treatments (n=12 per group): placebo (PBO), modafinil 100 mg (MOD), and combinations THN102 (modafinil 100 mg and 1, 3 or 9 mg flecainide as THN1, THN3 and THN9), as 3 oral doses over 18h.
From 40 to 60% of patients with depression experience a rapid and significant improvement of mood with one night of sleep deprivation (SD). The neural mechanisms underlying this effect have not been elucidated. Recent advances in functional neuroimaging have provided new opportunities to investigate state changes in regional brain function, along with a better understanding of the neural networks affected by depression and SD. Here we propose to study a group of N=48 antidepressant-free male and female patients with current depression symptom and N=12 healthy controls with no history of mood disorders before and after SD to provide mechanistic insight into the neural substrates underlying the antidepressant effects of SD. We hypothesize that SD-induced concurrent functional activity and connectivity changes in multiple brain networks related to different depressive symptom dimensions including emotion regulation, attention, arousal, self-referential, and reward processing will underlie the rapid and transient antidepressant effects of SD. Using an ABA design, multimodal brain imaging along with more traditional electroencephalographic (EEG) and neurobehavioral testing data will be acquired at baseline after normal sleep, during one night of total SD, and after one night of recovery sleep using a 5-day in laboratory protocol during which subjects will be continuously monitored by trained staff.
Brain Entrainment Technology (BET), also known as Binaural Beat Technology (BBT); is an auditory-neurophysiologic technique which uses auditory tones (often embedded in music, nature sounds or white noise) dichotically via stereo headphones to manipulate brainwave activity in turn affecting the listener's mental, physical and/or emotional state. Although this technology is widely marketed to the general public and can be found free in on the internet, only a hand full of scientific studies have shown its efficacy. This study is a follow-on study to the "Sound Mind Warrior (SMW) Study" (ClinicalTrials.gov [NCT02328690]) conducted 2012-2015 which assessed the efficacy of the technology (in the "theta" brainwave frequency) on the cardiovascular stress response in a group of service members with complaint of chronic stress. This study will now assess BET (in the "delta" brainwave frequency) on sleep quality in a population of military healthcare beneficiaries with complaint of poor sleep quality.
This study is a randomized, double-blind, placebo-controlled cross-over study designed to evaluate the effectiveness and efficacy of 2 consecutive work days of nightly use of active versus sham PowerSleep devices in adults with self-imposed restricted sleep schedules. The primary analysis will be intent-to-treat with the secondary analysis as an as-treated analysis. The expected duration of the study for each participant is up to 4 weeks.