Neural Synchronization, Chimera States and Sleep Asymmetry
Document Type
Article
Keywords
asymmetric sleep, chimera states, neural synchronization, sleep dynamics, unihemispheric sleep
Abstract
We model the dynamics of sleep states in two connected model brain hemispheres, using groups of coupled individual Hindmarsh-Rose neural oscillators. In a single isloated hemisphere, sleep-promoting neurons and wake-promoting neurons exhibit alternating levels of within-group mean field activity, as well as alternating levels of stochastic phase synchronization, as the system moves between simulated day and night. In a two-hemisphere model, we find differences in the behavior of the sleep-promototing or wake-promoting regions between hemispheres, indicative of chimera-like behavior. We observe phase-cluster states, in which different hemispheres exhibit different bursting dynamics, as well as differences in synchronization between hemispheres. This provides a basis for modeling unihemispheric sleep, which occurs naturally in cetaceans and some bird species, among others, as well as asymmetric sleep, which occurs in human subjects suffering from sleep apnea or experiencing the “first night effect” induced by sleeping in a novel environment.
Publication Date
1-1-2021
Publication Title
Frontiers in Network Physiology
Volume
1
DOI
10.3389/fnetp.2021.734332
Recommended Citation
Glaze, Tera A. and Bahar, Sonya, "Neural Synchronization, Chimera States and Sleep Asymmetry" (2021). Physics Faculty Works. 55.
DOI: https://doi.org/10.3389/fnetp.2021.734332
Available at:
https://irl.umsl.edu/physics-faculty/55