Berlin 2012 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 29: Posters II

DY 29.38: Poster

Donnerstag, 29. März 2012, 17:00–19:00, Poster A

Intrinsic Plasticity of Leaky Integrators Through Stochastic Adaptation — •Mathias Linkerhand and Claudius Gros — Institute for Theoretical Physics, Johann Wolfgang Goethe University, Frankfurt am Main, Germany

Intrinsic plasticity denotes the adaption of internal neural parameters, such as threshold and gain. It has been introduced and studied for discrete-time neurons. Since real world neurons respond continuously in time, here we introduce a continuous-time model of intrinsic plasticity in neurons. In this work we use rate coding leaky integrators. We show that the firing rate distribution of a single neuron efferently connected to a random noise input is driven by a target distribution through stochastic adaptation. For some target distributions this leads to self-organized stochastic escape. We also discuss the response to different kind of input stimuli and the behavior of small networks.