Biology – Quantitative Biology – Neurons and Cognition
Scientific paper
2008-09-09
Physical Review Letters 103, 138101, 2009
Biology
Quantitative Biology
Neurons and Cognition
7 pages total, including 2 figures, published by Physical Review Letters
Scientific paper
10.1103/PhysRevLett.103.138101
The sigmoidal tuning curve that maximizes the mutual information for a Poisson neuron, or population of Poisson neurons, is obtained. The optimal tuning curve is found to have a discrete structure that results in a quantization of the input signal. The number of quantization levels undergoes a hierarchy of phase transitions as the length of the coding window is varied. We postulate, using the mammalian auditory system as an example, that the presence of a subpopulation structure within a neural population is consistent with an optimal neural code.
McDonnell Mark D.
Morse Robert P.
Nikitin Alexander P.
Stocks Nigel G.
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