The brain waves of waking and REM sleep contrast with the slower and higher-voltage brain waves seen in NREM sleep. The high-voltage waves of NREM sleep are a result of synchronized "idling"
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The prefrontal cortex in sleep.
Experimental data indicate a role for the prefrontal cortex in mediating normal sleep physiology, dreaming and sleep-deprivation phenomena. During nonrandom-eye-movement (NREM) sleep, frontal cortical activity is characterized by the highest voltage and the slowest brain waves compared to other cortical regions. The differences between the self-awareness experienced in waking and its diminution...
متن کاملLocal Slow Waves in Superficial Layers of Primary Cortical Areas during REM Sleep
Sleep is traditionally constituted of two global behavioral states, non-rapid eye movement (NREM) and rapid eye movement (REM), characterized by quiescence and reduced responsiveness to sensory stimuli [1]. NREM sleep is distinguished by slow waves and spindles throughout the cerebral cortex and REM sleep by an "activated," low-voltage fast electroencephalogram (EEG) paradoxically similar to th...
متن کاملSpatial Learning Paradigm Can Increase Post-Stress Total Time of REM Sleep in Immobilized Rats
Background & Objective: Stress contributes to sleep-wake behavior in all animals. It seems that factors such as learning and memory processes can improve sleep disorders. Therefore, the present study was conducted to determine the effects of stress and learning (spatial memory) on total post-stress rapid-eye-movement (REM), non-rapid-eye-movement (NREM) and waking time in rats. Materials & Met...
متن کاملEvaluation of Electro Physiological Changes of Sleep among Patients with Supratentorial Ischemic Stroke and Comparison with Control group
Background & Aims: Sleep disorders are common complains in patients with cerebral stroke; studies on these issues are limited. We aimed to evaluate the sleep changes in patients with supratentorial ischemic stroke. Methods: In this cross sectional study, 38 patients (19 patients in supratentorial ischemic stroke group and 19 people in control group) were evaluated. Total sleep time, sleep effic...
متن کاملElicited pontogeniculooccipital waves and phasic suppression of diaphragm activity in sleep and wakefulness.
Fractionations are 20- to 100-ms pauses in diaphragm activity that occur spontaneously during rapid-eye-movement (REM) sleep, sometimes in association with pontogeniculooccipital (PGO) waves. Auditory stimuli can elicit fractionations or PGO waves during REM sleep, non-REM (NREM) sleep, and waking; however, their interrelationship has not been investigated. To determine whether the two phenomen...
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تاریخ انتشار 2002