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January 24, 2010 | History

Cholinergic influences on the encoding, but not retrieval, of crossmodal sensory feature binding in rats 1 edition

Cholinergic influences on the encoding, but not retrieval, of crossmod ...
Leigh Cortland Perry Botly

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Cholinergic influences on the encoding, but not retrieval, of crossmodal sensory feature binding in rats.

Published 2005 .
Written in English.

About the Book

The binding problem refers to the question of how the brain integrates sensory information registered by multiple brain regions to form a unified representation of a stimulus. Both human and nonhuman studies have suggested a modulatory role for the muscarinic cholinergic system in feature binding. However, such research has been limited to binding within single sensory modalities. We hypothesize that acetylcholine's contribution to feature binding is sensory in nature, and thus involved in binding within and between sensory modalities. We trained rats to perform a crossmodal feature binding digging task (Experiment 1) using stimulus bowls characterized by particular odor-texture conjunctions. Using a within-subjects pharmacological design, the muscarinic cholinergic antagonist scopolamine was found to selectively impair acquisition (Experiment 3) of the binding task, while sparing its retrieval (Experiment 2). Our results suggest that sufficient cortical muscarinic cholinergic activity is necessary for the encoding of crossmodal sensory feature binding.

Edition Notes

Source: Masters Abstracts International, Volume: 44-02, page: 1051.

Thesis (M.A.)--University of Toronto, 2005.

Electronic version licensed for access by U. of T. users.

ROBARTS MICROTEXT copy on microfiche (2 microfiches).

The Physical Object

Pagination
98 leaves.
Number of pages
98

ID Numbers

Open Library
OL19217866M
ISBN 10
0494075090

History

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January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page