Impact of experience on the representation of object-centered space in the macaque supplementary eye field.

Impact of experience on the representation of object-centered space in the macaque supplementary eye field. Research Abstract Details 

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Impact of experience on the representation of object-centered space in the macaque supplementary eye field. Abstract Text:

David E Moorman,Carl R Olson,

Many neurons in the macaque supplementary eye field (SEF) exhibit object-centered spatial selectivity, firing at different rates when the monkey plans a saccade to the left or right end of a horizontal bar. Is this property natural to the SEF or is it a product of specialized training in the laboratory? To answer this question, we monitored the activity of single SEF neurons in two monkeys before and after training to select eye-movement targets by an object-centered rule. During stage 1, the monkeys performed a color delayed-match-to-sample (DMS) task in which a red or green central cue dictated an eye movement to the matching end of a horizontal bar. Many neurons at this stage exhibited object-centered spatial selectivity. During stage 2, the monkeys performed a color-conditional object-centered task in which a green or red central cue instructed an eye movement to the left or right end of a gray bar. More neurons exhibited object-centered spatial selectivity during this stage than during stage 1. During stage 3, the monkeys again performed the color DMS task. The fraction of neurons exhibiting object-centered spatial selectivity remained at a level comparable to that observed during stage 2 and above that observed during stage 1. Thus object-centered spatial selectivity was present before training on an object-centered rule, was enhanced as a product of object-centered training, and outlasted active use of an object-centered rule. We conclude that neural representations of object-centered space, naturally present in the primate brain, can be sharpened by training.

Impact of experience on the representation of object-centered space in the macaque supplementary eye field. Publishing Authors By Initials

DE Moorman,CR Olson,

For similar visual fields research abstracts see: visual fields research

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Impact of experience on the representation of object-centered space in the macaque supplementary eye field. Journal Published:

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

Journal: Journal of neurophysiology

VOLUME: 97

Page Numbers: 2159-73

Journal Abbreviation: J. Neurophysiol.

ISSN: 0022-3077

DAY: 3

MONTH: 01

YEAR: 2007

Impact of experience on the representation of object-centered space in the macaque supplementary eye field. Information

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LANGUAGE: eng

NlmUniqueID: 375404

Impact of experience on the representation of object-centered space in the macaque supplementary eye field. Keywords Mesh Terms:

KEYWORDS: Visual Fields

MESH TERMS: physiology

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Grant and Affiliation Information for Impact of experience on the representation of object-centered space in the macaque supplementary eye field.

AFFILIATION: Center for the Neural Basis of Cognition, Mellon Institute, Room 115, 4400 Fifth Avenue, Pittsburgh, PA 15213-2683, USA.

Country: United States

AGENCY: United States NEI

GRANT: R01 EY-11831

ACRONYM: EY

MEDLINETA: J Neurophysiol

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