Topic
Slow-wave sleep
About: Slow-wave sleep is a research topic. Over the lifetime, 6543 publications have been published within this topic receiving 320663 citations. The topic is also known as: deep sleep.
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TL;DR: It is suggested that the seizure of an E1 mouse may belong to a sensory precipitating epilepsy and might have a certain focus in some portion of the brain, which might be predisposed by some genetic factors and might be related to vestibular or some other sensory neural pathway and to the parietal cortex.
110 citations
TL;DR: Eight young adults underwent 1 night of auditory sleep fragmentation followed by four naps of the multiple sleep latency test and performance testing the next day to mimic as closely as possible the nocturnal sleep disruption seen in subjects with upper airway resistance syndrome.
Abstract: Summary: Eight young adults underwent I night of auditory sleep fragmentation followed by four naps of the multiple sleep latency test and performance testing the next day. A latin-square design was used to compare results with baseline. Efforts were made to eliminate effects of learning on repeated performance tests. A mean of 303 arousals, lasting a mean of II seconds, disrupted nocturnal sleep. This sleep fragmentation was induced to mimic as closely as possible the nocturnal sleep disruption seen in subjects with upper airway resistance syndrome. There was a significant disruption of nocturnal sleep architecture with a significant overall decrease in slow-wave sleep (SWS) and a significant but more moderate decrease in rapid eye movement (REM) sleep during the fragmented night. The most interesting finding related to analysis by thirds of the night, which indicated an important increase over time in arousal threshold during SWS followed by REM sleep. This threshold increase was associated with a parallel increase in dB(A) levels needed to induce an arousal. Stages I and 2 nonrapid eye movement (NREM) sleep were less affected by the stimulation, but the amount of stage I NREM sleep decreased from the beginning to the end of the night, again indicating an increase in pressure to sleep. Following I night of sleep fragmentation, subjects had significantly shorter sleep latencies on the multiple sleep latency test for naps 2, 3 and 4. There was a significant relationship between percent nocturnal SWS and mean sleep latencies. The selected performance tests were not affected by I night of sleep fragmentation, despite the obvious sleepiness. Key Words: Sleep fragmentation Upper airway resistance syndrome-Sleepiness-Performance testing.
110 citations
TL;DR: Seven meaningful sleep-waking stages can be dissociated in the rat and the central responsiveness and neurophysiological correlations of these stages are discussed.
110 citations
TL;DR: The NREM sleep microstructure alterations found in subjects, associated with the reduction in REM sleep percentage, seem to be distinctive features of intellectual disability.
110 citations
TL;DR: It is demonstrated, that the EEG of slow wave sleep stages depicts a dimensionality, which is two units smaller than that of light or REM sleep.
Abstract: In order to perform an analysis of nonlinear EEG-dynamics we investigated the EEG of ten male probands during sleep. According to Rechtschaffen and Kales (1968) we scored the sleep-EEG and applied an algorithm, proposed by Grassberger and Proccaccia (1983) to compute the correlation dimension of different sleep stages. The correlation dimension characterizes the dynamics of the EEG signal and estimates the degrees of freedom of the signal under study. We could demonstrate, that the EEG of slow wave sleep stages depicts a dimensionality, which is two units smaller than that of light or REM sleep.
110 citations