Use este identificador para citar ou linkar para este item: https://repositorio.ufrn.br/jspui/handle/123456789/23224
Título: Distinct features of fast oscillations in phasic and tonic rapid eye movement sleep
Autor(es): BRANKACˇ K, JURI J
SCHEFFZU¨ K, CLAUDIA
KUKUSHKA, VALERIY I .
VYSSOTSKI, ALEX E I L .
TORT, ADRIANO B . L .
DRAGUHN, ANDREAS
Palavras-chave: cross-frequency coupling;gamma;mouse;REM sleep;theta
Data do documento: 28-Mar-2012
Resumo: Spatiotemporal activity patterns of neurones are organized by different types of coherent network oscillations. Frequency content and crossfrequency coupling of cortical oscillations are strongly state-dependent, indicating that different patterns of wakefulness or sleep, respectively, support different cognitive or mnestic processes. It is therefore crucial to analyse specific sleep patterns with respect to their oscillations, including interaction between fast and slow rhythms. Here we report the oscillation profile of phasic rapid eye movement (REM), a form of REM sleep which has been implicated in hippocampus-dependent memory processing. In all analysed frequency bands (theta, gamma and fast gamma, respectively) we find higher frequencies and higher power in phasic REM compared to tonic REM or wakefulness. Theta-phase coupling of fast oscillations, however, was highest in tonic REM, followed by phasic REM and wakefulness. Our data suggest different roles of phasic and tonic REM for information processing or memory formation during sleep.
URI: http://hdl.handle.net/123456789/23224
ISSN: 1365-2869
Aparece nas coleções:ICe - Artigos publicados em periódicos

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