The firing statistics of Poisson neuron models driven by slow stimuli

Details The firing statistics of Poisson neuron models driven by slow stimuli The firing statistics of Poisson neuron models driven by slow stimuli

2009-09-08

arxiv.org/abs/0909.1563v1

Biology

Quantitative Biology

Neurons and Cognition

15 pages, 9 figures, accepted in Biological Cybernetics (Springer)

Scientific paper

The coding properties of cells with different types of receptive fields have been studied for decades. ON-type neurons fire in response to positive fluctuations of the time-dependent stimulus, whereas OFF cells are driven by negative stimulus segments. Biphasic cells, in turn, are selective to up/down or down/up stimulus upstrokes. In this paper, we explore the way in which different receptive fields affect the firing statistics of Poisson neuron models, when driven with slow stimuli. We find analytical expressions for the time-dependent peri-stimulus time histogram and the inter-spike interval distribution in terms of the incoming signal. Our results enable us to understand the interplay between the intrinsic and extrinsic factors that regulate the statistics of spike trains. The former depend on biophysical neural properties, whereas the latter hinge on the temporal characteristics of the input signal.

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