A high-density electroencephalographic study of synchronous networks during rapid-eye-movement sleep

Abstract

This study was geared toward constructing synchronous functional brain networks that characterize various REM periods throughout the night. Data were obtained from 8 subjects using an electroencephalographic system with 256 channels and were processed by both artifact filtering and trend removal before cross-correlation analyses. The resultant networks were primarily made up of positive connections clustered on the zygomatic-mandible, anterio-fronto-central, and occipito-temporo-cerebellar regions and distant negative connections between the anterio-fronto-central and occipito-temporo-cerebellar regions. They were distinguished by their remarkable constancy across sleep cycles and subjects although some sex and individual variations were observed. In addition, most adjacent sensors were directly linked with each other. This network property resonated with the perspective that functional kinship between neural structures can be to a certain extent revealed by their anatomical proximity. (PsycINFO Database Record (c) 2016 APA, all rights reserved)