Controlling limit-cycle behaviors of brain activity.
The limit cycles of brain activity are studied using a compact continuum model that reproduces the main features of electroencephalographic signals, including bifurcations of fixed points and limit cycles in seizures. Frequencies and amplitudes are predicted analytically and related to physiology. Gaussian stimuli yield two distinct evoked responses in the linearly stable zone, consistent with experiment. Limit cycles can be initiated or suppressed by control signals or stimuli.
Kim
J W
JW
School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.
Robinson
P A
PA
D000200:Action Potentials; D001683:Biological Clocks; D001921:Brain / Q000503:physiopathology*; D003198:Computer Simulation; D004569:Electroencephalography / Q000379:methods*; D008959:Models, Neurological; D009415:Nerve Net / Q000503:physiopathology*; D009474:Neurons; D012640:Seizures / Q000503:physiopathology*