نتایج جستجو برای: wake cycle

تعداد نتایج: 293091  

Journal: :Perspectives on psychological science : a journal of the Association for Psychological Science 2012
Dalena van der Kloet Harald Merckelbach Timo Giesbrecht Steven Jay Lynn

In psychopathology, dissociation typically refers to a disturbance in the normal integration of thoughts, feelings, and experiences into consciousness and memory. In this article, we review the literature on how sleep disturbances relate to dissociative symptoms and memory failure. We contend that this body of research offers a fresh perspective on dissociation. Specifically, we argue that diss...

Journal: :Arquivos de neuro-psiquiatria 2007
Ana Chrystina Crippa Carlos Eduardo Silvado Luciano de Paola Rosana H Scola Regina Maria Fernandes Lineu César Werneck

OBJECTIVE To identify and quantify frontal sharp transients found in neonatal polysomnography of healthy full term newborns in each stage of the sleep-wake cycle within the first 48 hours of life. METHOD The EEG from healthy term 32 newborns, legal age of two days and with adequate monitoring during pregnancy. Frontal sharp transients (FST) were quantified, according to synchronous or asynchr...

Journal: :The British journal of psychiatry : the journal of mental science 2007
David J Meagher Maria Moran Bangaru Raju Dympna Gibbons Sinead Donnelly Jean Saunders Paula T Trzepacz

BACKGROUND Delirium phenomenology is understudied. AIMS To investigate the relationship between cognitive and non-cognitive delirium symptoms and test the primacy of inattention in delirium. METHOD People with delirium (n=100) were assessed using the Delirium Rating Scale-Revised-98 (DRS-R98) and Cognitive Test for Delirium (CTD). RESULTS Sleep-wake cycle abnormalities and inattention wer...

2008
Yu-Chia Chang Jehn-Ruey Jiang Jang-Ping Sheu

In this paper, we propose an asynchronous duty cycle adjustment MAC protocol, called ADCA, for the wireless sensor network (WSN). ADCA is a sleep/wake protocol to reduce power consumption without lowering network throughput or lengthening transmission delay. It is asynchronous; it allows each node in the WSN to set its own sleep/wake schedule independently. The media access is thus staggered an...

2012
Hadar Ben-Gida

Wakes of towed and self-propelled bodies moving in stably stratified flows are of relevance to environmental and ocean engineering applications. To date, the majority of studies focused on the wakes of spheres and cylinders in stratified flows. Stable stratification modulates the wake dynamics, leading to a significantly different flow compared to non-stratified wakes. The wakes of spheres and ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1993
D M Edgar W C Dement C A Fuller

Sleep and wakefulness are governed by both the suprachiasmatic nuclei of the hypothalamus (SCN), and a sleep homeostatic process; however, the interaction of these control systems is not well understood. From rodent studies it has been assumed that the SCN promote neither wake nor sleep but gate the homeostatic sleep-promoting process. Yet in humans sleep tendency is lowest during the later wak...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1380

در این پایان نامه خصوصیات کلی شبیه سازی cycle-based معرفی شده و نحوه انجام شبیه سازی cycle-based در سطح گیت و سطح انتقال ثبات مورد بررسی موشکافانه قرار گرفته است . در این پایان نامه همچنین محدودیتهای شبیه سازی cycle-based معرفی شده و راه حلهایی برای این مشکلات ارائه شده است . به موازات این پایان نامه و برای اثبات صحت نظریه های مطرح شده و راه حلهای ارائه شده در آن، یک شبیه ساز cycle-based برای ز...

2012
P Gringras C Gamble A P Jones L Wiggs P R Williamson A Sutcliffe P Montgomery W P Whitehouse I Choonara T Allport A Edmond R Appleton

Children with neurodevelopmental disorders are at risk of sleep problems, typically difficulty getting to sleep, sleep/wake rhythm disturbances and reduced duration of sleep (insomnia). This may be associated with abnormally timed or inadequate secretion of melatonin, a naturally-occurring hormone involved in coordinating the body's sleep-wake cycle. Previously, we reviewed the use of a melaton...

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