How behavioral constraints may determine optimal sensory representations.

How behavioral constraints may determine optimal sensory representations. Research Abstract Details 

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How behavioral constraints may determine optimal sensory representations. Abstract Text:

Emilio Salinas,

The sensory-triggered activity of a neuron is typically characterized in terms of a tuning curve, which describes the neuron's average response as a function of a parameter that characterizes a physical stimulus. What determines the shapes of tuning curves in a neuronal population? Previous theoretical studies and related experiments suggest that many response characteristics of sensory neurons are optimal for encoding stimulus-related information. This notion, however, does not explain the two general types of tuning profiles that are commonly observed: unimodal and monotonic. Here I quantify the efficacy of a set of tuning curves according to the possible downstream motor responses that can be constructed from them. Curves that are optimal in this sense may have monotonic or nonmonotonic profiles, where the proportion of monotonic curves and the optimal tuning-curve width depend on the general properties of the target downstream functions. This dependence explains intriguing features of visual cells that are sensitive to binocular disparity and of neurons tuned to echo delay in bats. The numerical results suggest that optimal sensory tuning curves are shaped not only by stimulus statistics and signal-to-noise properties but also according to their impact on downstream neural circuits and, ultimately, on behavior.

How behavioral constraints may determine optimal sensory representations. Publishing Authors By Initials

E Salinas,

For similar vision disparity research abstracts see: vision disparity research

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How behavioral constraints may determine optimal sensory representations. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: PLoS biology

VOLUME: 4

Page Numbers: e387

Journal Abbreviation: PLoS Biol.

ISSN: 1545-7885

DAY: 3

MONTH: Nov

YEAR: 2006

How behavioral constraints may determine optimal sensory representations. Information

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LANGUAGE: eng

NlmUniqueID: 101183755

How behavioral constraints may determine optimal sensory representations. Keywords Mesh Terms:

KEYWORDS: Vision Disparity

MESH TERMS: physiology

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Grant and Affiliation Information for How behavioral constraints may determine optimal sensory representations.

AFFILIATION: Department of Neurobiology and Anatomy, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America. esalinas@wfubmc.edu

Country: United States

AGENCY: United States NINDS

GRANT: NS044894

ACRONYM: NS

MEDLINETA: PLoS Biol

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