Noise sustained waves in subexcitable media: From chemical waves to brain waves.
We discuss a novel type of spatiotemporal pattern that can be observed in subexcitable media when coupled to a thermal environment. These patterns have been recently observed in several different types of systems: a subexcitable photosensitive Belousov-Zhabotinsky reaction, hippocampal slices of rat brains, and astrocyte syncytium. In this paper, we introduce the basic concepts of subexcitable media, describe recent experimental observations in chemistry and neurophysiology, and put these observation into context with computer simulations. (c) 1998 American Institute of Physics.
Jung
P.
P
Department of Physics and Astronomy, Program for Condensed Matter and Surface Science, and Program for Neurobiology, Ohio University, Athens, Ohio 45701.
Cornell-Bell
A.
A
Moss
F.
F
Kadar
S.
S
Wang
J.
J
Showalter
K.
K