Gaetano L. Aiello, Universita' di Palermo, Italy

Abstract: A special case of deterministic chaos that is independent of the architecture of the connections has been observed in a computer model of a purely excitatory neuronal network. Chaos onsets when the level of connectivity is critically low. The results indicate a typical period-doubling route to chaos as the connectivity decreases. A cognitive interpretation of such type of chaos, based on information theory and phase-transitions, is proposed.

Keywords: connectivity, time series, cobweb diagrams, bifurcations, sleep stages