Dynamic functional connectivity states characterize NREM sleep and wakefulness
نویسندگان
چکیده
منابع مشابه
EEG microstates of wakefulness and NREM sleep
EEG-microstates exploit spatio-temporal EEG features to characterize the spontaneous EEG as a sequence of a finite number of quasi-stable scalp potential field maps. So far, EEG-microstates have been studied mainly in wakeful rest and are thought to correspond to functionally relevant brain-states. Four typical microstate maps have been identified and labeled arbitrarily with the letters A, B, ...
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We investigated human hippocampal functional connectivity in wakefulness and throughout non-rapid eye movement sleep. Young healthy subjects underwent simultaneous EEG and functional magnetic resonance imaging (fMRI) measurements at 1.5 T under resting conditions in the descent to deep sleep. Continuous 5 min epochs representing a unique sleep stage (i.e., wakefulness, sleep stages 1 and 2, or ...
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The overall function of sleep is hypothesized to provide "recovery" after preceding waking activities, thereby ensuring optimal functioning during subsequent wakefulness. However, the functional significance of the temporal dynamics of sleep, manifested in the slow homeostatic process and the alternation between non-rapid eye movement (NREM) and REM sleep remains unclear. We propose that NREM a...
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Significant inter-individual differences in vigilance decline following sleep deprivation exist. We characterized functional connectivity in 68 healthy young adult participants in rested wakefulness and following a night of total sleep deprivation. After whole brain signal regression, functionally connected cortical networks during the well-rested state exhibited reduced correlation following s...
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Background: The hippocampal formation (HF+) is part of a system that plays a critical role in the encoding and retrieval of memory [1]. It has repeatedly been shown that consolidation of declarative memories occurs in human NREM sleep, supposedly involving transfer of information from the hippocampus to the neocortex [2,3]. The four major subregions of the HF+ are the cornu ammonis (CA), the de...
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ژورنال
عنوان ژورنال: Human Brain Mapping
سال: 2019
ISSN: 1065-9471,1097-0193
DOI: 10.1002/hbm.24770