EEG Signal Diversity Varies With Sleep Stage and Aspects of Dream Experience.

ABSTRACT: Several theories link consciousness to complex cortical dynamics, as suggested by comparison of brain signal diversity between conscious states and states where consciousness is lost or reduced. In particular, Lempel-Ziv complexity, amplitude coalition entropy and synchrony coalition entropy distinguish wakefulness and REM sleep from deep sleep and anesthesia, and are elevated in psychedelic states, reported to increase the range and vividness of conscious contents. Some studies have even found correlations between complexity measures and facets of self-reported experience. As suggested by integrated information theory and the entropic brain hypothesis, measures of differentiation and signal diversity may therefore be measurable correlates of consciousness and phenomenological richness. In

SUBMITTER: Aamodt A 

PROVIDER: S-EPMC8102678 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature