Date of Original Version

10-1-2012

Type

Article

PubMed ID

23339613

Rights Management

© 2013 Massachusetts Institute of Technology

Abstract or Description

In many cortical areas, neural spike trains do not follow a Poisson process. In this study, we investigate a possible benefit of non-Poisson spiking for information transmission by studying the minimal rate fluctuation that can be detected by a Bayesian estimator. The idea is that an inhomogeneous Poisson process may make it difficult for downstream decoders to resolve subtle changes in rate fluctuation, but by using a more regular non-Poisson process, the nervous system can make rate fluctuations easier to detect. We evaluate the degree to which regular firing reduces the rate fluctuation detection threshold. We find that the threshold for detection is reduced in proportion to the coefficient of variation of interspike intervals.

DOI

10.1162/NECO_a_00420

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Published In

Neural computation, 25, 4, 854-876.