background & aim : mother-infant separation is one of the main causes of sleep-wake states disorders in neonatal intensive care unit (nicu). the current study was conducted to investigate the effect of in-arms-holding by mothers on sleep-wake states disorders of preterm neonates. methods & materials : in a pilot study, through a semi-experimental pretest-posttest method, 35 preterm neonates wit...

the recent literatures indicate that central nervous system (cns) is highly vulnerable to systemic hyperthermia induced by whole body heating on conscious animals. in the present study, cerebral electrical activity or eeg (electroencephalogram) following exposure to high environmental heat has been studied in moving rats. rats were divided into three group (i) acute heat stress-subjected to a s...

The recent literatures indicate that central nervous system (CNS) is highly vulnerable to systemic hyperthermia induced by whole body heating on conscious animals. In the present study, cerebral electrical activity or EEG (electroencephalogram) following exposure to high environmental heat has been studied in moving rats. Rats were divided into three group (i) acute heat stress-subjected to a s...

The wake states resulting from the controlled oscillation of a cylinder transverse to the free stream are presented. A new wake state is revealed by instantaneous measurements of the total and vortex lift phases, and the phase-referenced, quantitative wake structure. This ‘‘intermediate wake state’’ occurs at oscillation frequencies between the previously observed lowand high-frequency states. ...

Actigraphy offers one of the best-known alternatives to polysomnography for sleep-wake identification. The advantages of actigraphy include high accuracy, simplicity of use and low intrusiveness. These features allow the use of actigraphy for determining sleep-wake states in such highly sensitive groups as infants. This study utilizes a motion sensor (accelerometer) for a dual purpose: to deter...

Common medical conditions are often associated with sleep abnormalities. Patients with medical disorders often suffer from poor sleep quality compared to healthy individuals, which in turn may worsen the symptoms of the disorder. Accurate detection of sleep/wake patterns is important in developing personalized digital markers, which can be used for objective measurements and efficient disease m...

Phillips-Chen-Robinson (PCR) model The PCR model itself combines two earlier models, one describing switching between sleep and wake states as a result of a drive consisting of homeostatic and circadian components3, and one describing the entrainment of the circadian system by light4. Specifically, sleep and wake states occur as a result of mutual inhibition between sleep promoting and wake pro...

1 Center for Bioethics, Health and Society, Wake Forest University, Winston-Salem, North Carolina, United States of America, 2 Department of Philosophy, Wake Forest University, Winston-Salem, North Carolina, United States of America, 3 History of Medicine, History and Cultural Studies, I.M. Sechenov First Moscow State Medical University, Moscow, Russia, 4 Baker Institute for Public Policy, Rice...

A major limitation in the study of sleep breathing disorders in mouse models of pathology is the need to combine whole-body plethysmography (WBP) to measure respiration with electroencephalography/electromyography (EEG/EMG) to discriminate wake-sleep states. However, murine wake-sleep states may be discriminated from breathing and body movements registered by the WBP signal alone. Our goal was ...