Berlin 2012 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 18: Posters: Statistical Physics in Biological Systems

BP 18.13: Poster

Mittwoch, 28. März 2012, 17:30–19:30, Poster A

Heterogeneous short-term plasticity enables spectral separation of information in the neural spike train — •Felix Droste, Tilo Schwalger, and Benjamin Lindner — Bernstein Center for Computational Neuroscience, Haus 2, Philippstrasse 13, 10115 Berlin, Germany

In order to understand how information is processed in the brain, i.e. how signals are encoded, transmitted, and gated, it is vital to investigate how a single neuron responds to inputs that encode multiple signals. Here, we study a scenario in which a neuron receives two stimuli through populations of facilitating and depressing synapses, respectively. We show that this leads to a spectral separation of information into high and low frequency bands. This spectral separation is based on the respective other signal acting as a kind of noise in the disfavored frequency band. We also show that the total information transfer about one signal can still benefit from the presence of the other signal through a form of stochastic resonance.