Dynamical evolution of spatiotemporal patterns in mammalian middle cortex.
The spatiotemporal structure of brain oscillations are important in understanding neural function. We analyze oscillatory episodes from isotropic preparations from the middle layers of a mammalian cortex which display irregular and chaotic spatiotemporal wave activity, within which spontaneously emerge spiral and plane waves. The dimensionality of these dynamics shows a consistent decrease during the middle of these episodes, regardless of the presence of simple spiral or plane waves. It is important to define the relevant biological order parameters which govern these dynamical bifurcations.
Schiff
Steven J
SJ
Department of Neurosurgery, The Pennsylvania State University, 212 Earth-Engineering Sciences Building, University Park, Pennsylvania 16802, USA. sschiff@psu.edu
Huang
Xiaoying
X
Wu
Jian-Young
JY
D000818:Animals; D005075:Biological Evolution; D003198:Computer Simulation; D008954:Models, Biological; D051381:Rats; D014793:Visual Cortex / Q000502:physiology*