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An information theoretic characterisation of auditory encoding.

Publication ,  Journal Article
Overath, T; Cusack, R; Kumar, S; von Kriegstein, K; Warren, JD; Grube, M; Carlyon, RP; Griffiths, TD
Published in: PLoS biology
October 2007

The entropy metric derived from information theory provides a means to quantify the amount of information transmitted in acoustic streams like speech or music. By systematically varying the entropy of pitch sequences, we sought brain areas where neural activity and energetic demands increase as a function of entropy. Such a relationship is predicted to occur in an efficient encoding mechanism that uses less computational resource when less information is present in the signal: we specifically tested the hypothesis that such a relationship is present in the planum temporale (PT). In two convergent functional MRI studies, we demonstrated this relationship in PT for encoding, while furthermore showing that a distributed fronto-parietal network for retrieval of acoustic information is independent of entropy. The results establish PT as an efficient neural engine that demands less computational resource to encode redundant signals than those with high information content.

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Published In

PLoS biology

DOI

EISSN

1545-7885

ISSN

1544-9173

Publication Date

October 2007

Volume

5

Issue

11

Start / End Page

e288

Related Subject Headings

  • Pitch Perception
  • Magnetic Resonance Imaging
  • Information Theory
  • Humans
  • Female
  • Entropy
  • Developmental Biology
  • Brain Mapping
  • Auditory Pathways
  • Auditory Cortex
 

Citation

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Overath, T., Cusack, R., Kumar, S., von Kriegstein, K., Warren, J. D., Grube, M., … Griffiths, T. D. (2007). An information theoretic characterisation of auditory encoding. PLoS Biology, 5(11), e288. https://doi.org/10.1371/journal.pbio.0050288
Overath, Tobias, Rhodri Cusack, Sukhbinder Kumar, Katharina von Kriegstein, Jason D. Warren, Manon Grube, Robert P. Carlyon, and Timothy D. Griffiths. “An information theoretic characterisation of auditory encoding.PLoS Biology 5, no. 11 (October 2007): e288. https://doi.org/10.1371/journal.pbio.0050288.
Overath T, Cusack R, Kumar S, von Kriegstein K, Warren JD, Grube M, et al. An information theoretic characterisation of auditory encoding. PLoS biology. 2007 Oct;5(11):e288.
Overath, Tobias, et al. “An information theoretic characterisation of auditory encoding.PLoS Biology, vol. 5, no. 11, Oct. 2007, p. e288. Epmc, doi:10.1371/journal.pbio.0050288.
Overath T, Cusack R, Kumar S, von Kriegstein K, Warren JD, Grube M, Carlyon RP, Griffiths TD. An information theoretic characterisation of auditory encoding. PLoS biology. 2007 Oct;5(11):e288.
Journal cover image

Published In

PLoS biology

DOI

EISSN

1545-7885

ISSN

1544-9173

Publication Date

October 2007

Volume

5

Issue

11

Start / End Page

e288

Related Subject Headings

  • Pitch Perception
  • Magnetic Resonance Imaging
  • Information Theory
  • Humans
  • Female
  • Entropy
  • Developmental Biology
  • Brain Mapping
  • Auditory Pathways
  • Auditory Cortex