The Awakening Brain is Characterized by a Widespread and Spatiotemporally Heterogeneous Increase in High Frequencies
Source abstract
Abstract
Abstract Morning awakening is part of everyday life. Surprisingly, information remains scarce on its underlying neurophysiological correlates. Here simultaneous polysomnography and stereo‐electroencephalography recordings from 18 patients are used to assess the spectral and connectivity content of the process of awakening at a local level 15 min before and after the awakening. Awakenings from non‐rapid eye movement sleep are accompanied by a widespread increase in ripple (>80 Hz) power in the fronto‐temporal and parieto‐insular regions, with connectivity showing an almost exclusive increase in the ripple band in the somatomotor, default, dorsal attention, and frontoparietal networks. Awakenings from rapid eye movement sleep are characterized by a widespread and almost exclusive increase in the ripple band in all available brain lobes, and connectivity increases mainly in the low ripple band in the limbic system as well as the default, dorsal attention, somatomotor, and frontoparietal networks.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Sleep and Wakefulness Research · EEG and Brain-Computer Interfaces · Neural dynamics and brain function
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Analytical Neurophysiology Lab McGill University Montreal QC H3A 2B4 Canada
Multimodal Functional Imaging Lab Biomedical Engineering Department McGill University Montreal QC H3A 2B4 Canada
Department of Neurology Beijing Tiantan Hospital Capital Medical University Beijing 100070 China
China National Clinical Research Center for Neurological Diseases Beijing 100070 China
Montreal Neurological Institute and Hospital McGill University Montreal QC H3A 2B4 Canada
Multimodal Functional Imaging Lab Department of Physics PERFORM Center/School of Health Concordia University Montreal QC H4B 1R6 Canada
Department of Neurology Duke University Medical Center Durham NC 27705 USA
Department of Biomedical Engineering Duke Pratt School of Engineering Durham NC 27705 USA
Funding
Canadian Institutes of Health Research
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