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Selective Dysgranular Retrosplenial Cortex Lesions in Rats Disrupt Allocentric Performance of the Radial-Arm Maze Task.

Authors :
Vann, Seralynne D.
Aggleton, John P.
Source :
Behavioral Neuroscience. Dec2005, Vol. 119 Issue 6, p1682-1686. 5p. 1 Diagram, 1 Graph.
Publication Year :
2005

Abstract

The present study provides the 1st report on the effects of selective lesions of the dysgranular portion of the retrosplenial cortex in rats. Excitotoxic lesions of the dysgranular area were sufficient to impair behavior in the radial-arm maze by biasing the strategy used to solve the task. In particular, rats with dysgranular retrosplenial lesions were less reliant on distal visual cues to control performance of a working memory task in the radial-arm maze. Instead, they were more reliant on using a motor turning strategy to solve the task. This change in strategy is consistent with anatomical data showing that the dysgranular region is the primary recipient of visual inputs to the rat retrosplenial cortex. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
07357044
Volume :
119
Issue :
6
Database :
Academic Search Index
Journal :
Behavioral Neuroscience
Publication Type :
Academic Journal
Accession number :
19863011
Full Text :
https://doi.org/10.1037/0735-7044.119.6.1682