Enhanced phase-amplitude coupling of human electrocorticography selectively in the posterior cortical region during rapid eye movement sleep.
Cerebral cortex (New York, N.Y. : 1991) December 20, 2022 Jumpei Togawa, Riki Matsumoto, Kiyohide Usami et al. 2 citations
Phase-amplitude coupling (PAC) between slow waves (0.5-0.6 Hz) and gamma activities occurs not only during light sleep and slow-wave sleep but also during wakefulness and rapid eye movement (REM) sleep, as shown by electrocorticography in 11 patients with epilepsy. During slow-wave sleep, PAC is high over a large region, whereas during REM sleep it is stronger in the posterior cortical region around the temporoparietal junction than in the frontal region. PAC also tends to be higher posteriorly during wakefulness. The findings suggest the posterior cortical region has a functional role in REM sleep and may contribute to maintaining the dreaming experience.