Biology – Quantitative Biology – Neurons and Cognition
Scientific paper
2008-07-09
Biology
Quantitative Biology
Neurons and Cognition
Accepted for publication in Neural Computation
Scientific paper
We present a first-order non-homogeneous Markov model for the interspike-interval density of a continuously stimulated spiking neuron. The model allows the conditional interspike-interval density and the stationary interspike-interval density to be expressed as products of two separate functions, one of which describes only the neuron characteristics, and the other of which describes only the signal characteristics. This allows the use of this model to predict the response when the underlying neuron model is not known or well determined. The approximation shows particularly clearly that signal autocorrelations and cross-correlations arise as natural features of the interspike-interval density, and are particularly clear for small signals and moderate noise. We show that this model simplifies the design of spiking neuron cross-correlation systems, and describe a four-neuron mutual inhibition network that generates a cross-correlation output for two input signals.
Etienne-Cummings R.
Jin Changhao
Schaik van A.
Tapson Jonathan
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