Information theory in auditory research

Israel Nelken, Gal Chechik

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Mutual information (MI) is in increasing use as a way of quantifying neural responses. However, it is still considered with some doubts by many researchers, because it is not always clear what MI really measures, and because MI is hard to calculate in practice. This paper aims to clarify these issues. First, it provides an interpretation of mutual information as variability decomposition, similar to standard variance decomposition routinely used in statistical evaluations of neural data, except that the measure of variability is entropy rather than variance. Second, it discusses those aspects of the MI that makes its calculation difficult. The goal of this paper is to clarify when and how information theory can be used informatively and reliably in auditory neuroscience.

Original languageEnglish
Pages (from-to)94-105
Number of pages12
JournalHearing Research
Volume229
Issue number1-2
DOIs
StatePublished - Jul 2007
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by a grant from the Israeli Science Foundation. We thank Yael Bitterman for useful comments on the manuscript.

Keywords

  • Auditory system
  • Entropy
  • Information theory
  • Mutual information
  • Neural code
  • Variance decomposition

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