Research article summary (published 29 Sep 2003):

Doubly distributional population codes: simultaneous representation of uncertainty and multiplicity.

Full Abstract

Perceptual inference fundamentally involves uncertainty, arising from noise in sensation and the ill-posed nature of many perceptual problems. Accurate perception requires that this uncertainty be correctly represented, manipulated, and learned about. The choices subjects make in various psychophysical experiments suggest that they do indeed take such uncertainty into account when making perceptual inferences, posing the question as to how uncertainty is represented in the activities of neuronal populations. Most theoretical investigations of population coding have ignored this issue altogether; the few existing proposals that address it do so in such a way that it is fatally conflated with another facet of perceptual problems that also needs correct handling:
multiplicity (that is, the simultaneous presence of multiple distinct stimuli). We present and validate a more powerful proposal for the way that population activity may encode uncertainty, both distinctly from and simultaneously with multiplicity.

Learn Faster Today      Improve your study skills

Author information

Author/s: Sahani, Maneesh (M); Dayan, Peter (P);

Affiliation: W.M. Keck Foundation Center for Integrative Neurosciences, Univ. of Calif., San Francisco, CA 94143-0732, USA. maneesh(-atsign-)phy.ucsf.edu

Journal and publication information

Publication Type: Journal Article

Journal: Neural computation (Neural Comput), published in United States. (Language: eng)

Reference: 2003-Oct; vol 15 (issue 10) : pp 2255-79

Dates: Created 2003/09/26; Completed 2003/10/29; Revised 2004/11/17;

PMID: 14511521, status: MEDLINE (last retrieval date: 11/6/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

External Links for this article (including full text providers, if available):

Click Electronic Full-text Provider Links to see options for finding the electronic full text links to this article. Note there may be a subscription or fee required for access to the full text. See our FAQ for information on finding FREE full text articles.

This article may also be located in paper journal collections available in many libraries. Use the Journal and Publication Information above to find the full article.

MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Action Potentials - physiology Animals Artifacts Central Nervous System - physiology Humans Models, Neurological

Models, Statistical Neurons - physiology Perception - physiology Signal Transduction - physiology Statistical Distributions Uncertainty

Related articles

This article has not been indexed for related articles as yet, however you can still use the live related article search links below.

See 100+ related articles.

See a large map of 100+ related articles.