Berlin 2005 – scientific programme
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DY: Dynamik und Statistische Physik
DY 21: Statistical Physics in Biological Systems
DY 21.11: Talk
Saturday, March 5, 2005, 11:00–11:15, TU H2032
Assessment of Parameters of Neural Ensembles for the Calibration of Modification Techniques — •Oliver Holzner1, Alexander Kleinsorge1, Eckehard Schöll1, and Peter Tass2 — 1Institut für Theoretische Physik, Technische Universität Berlin, D-10623 Berlin, Germany — 2Institut für Medizin, Forschungszentrum Jülich, D-52425 Jülich, Germany
Differential equations modeling neural ensemble behavior generally contain a multitude of parameters governing the ensemble’s behavior. Their corresponding neurophysiological parameter values vary substantially between individuals, and even within one individual over time. The problem of calibrating these parameters without dissecting the system ("in-vivo") is solved by using nonlinear response theory in conjunction with calculating non-autonomous attractor landscapes for the dynamical system considered. Functioning of calibration by means of elementary versus feedback-looped input signals is demonstrated in the presence of various types of noise.