Regensburg 2010 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 33: Posters: Neurobiophysics
BP 33.5: Poster
Donnerstag, 25. März 2010, 17:15–20:00, Poster B1
Triggering bursts in all-to-all coupled neurons with global inhibition — •Hong-Viet Ngo1, Jan Köhler2, Jörg Mayer2, Jens Christian Claussen1, and Heinz Georg Schuster2 — 1Institut für Neuro- und Bioinformatik, Univ. zu Lübeck — 2Univ. Kiel
Slow-wave sleep in mammals is characterized by a change of large-scale cortical activity currently paraphrased as cortical up-down states. Recently [Y. Shu, A. Hasenstaub & D.A. McCormick. Nature 423, 288 (2003)] demonstrated experimentally a bistable collective behaviour in ferret brain slices, with the remarkable property that the up states can be switched on and off with excitations, whereby the effect of the second pulse significantly depends on the time interval between the pulses. Here we present a time-discrete model of a neural network that reproduces this type of behavior, as well as reproduces the time-dependence found in the experiments. This class of models could be of general interest to various types of coupled systems if control pulses of negative signs cannot be realized, and offers new possibilities to control cortical slow waves.