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Berlin 2015 – scientific programme

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BP: Fachverband Biologische Physik

BP 8: Neurophysics II

BP 8.4: Talk

Monday, March 16, 2015, 15:15–15:30, H 1058

Spike timing reliability and information transfer under noisy juxtacellular stimulation --- Experiment and theory — •Jens Doose1,2, Guy Doron1,2, Michael Brecht1,2, and Benjamin Lindner1,21Bernstein Center for Computational Neuroscience — 2Humboldt University of Berlin, Berlin, Germany

We used nanostimulation, a technique which allows stimulation of identified single neurons in vivo, in order to drive pyramidal cells in anesthetized rat motor cortex. Using this method we find that stimulating with fluctuating stimuli (frozen bandpass-limited white noise) results in increased spike timing reliability. Specifically, we report that parametrically increasing the stimulus variance results in increased spike train synchronization. We also explore how well the spike train as well as statistics like the power spectrum or the spectral coherence function, in response to this stimulus can be captured by a model neuron. In particular we use the exponential integrate-and-fire neuron, a simple model that has been successfully applied for reproducing spike times of pyramidal cells under noisy current stimulation in vitro.

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