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A novel role for the rat retrosplenial cortex in cognitive control

Nelson, Andrew John Dudley, Hindley, Emma Louise, Haddon, Josephine Elizabeth, Vann, Seralynne Denise and Aggleton, John Patrick 2014. A novel role for the rat retrosplenial cortex in cognitive control. Learning & Memory 21 (2) , pp. 90-97. 10.1101/lm.032136.113

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Abstract

By virtue of its frontal and hippocampal connections, the retrosplenial cortex is uniquely placed to support cognition. Here, we tested whether the retrosplenial cortex is required for frontal tasks analogous to the Stroop Test, i.e., for the ability to select between conflicting responses and inhibit responding to task-irrelevant cues. Rats first acquired two instrumental conditional discriminations, one auditory and one visual, set in two distinct contexts. As a result, rats were rewarded for pressing either the right or left lever when a particular auditory or visual signal was present. In extinction, rats received compound stimuli that either comprised the auditory and visual elements that signaled the same lever response (congruent) or signaled different lever responses (incongruent) during training. On conflict (incongruent) trials, lever selection by sham-operated animals followed the stimulus element that had previously been trained in that same test context, whereas animals with retrosplenial cortex lesions failed to disambiguate the conflicting response cues. Subsequent experiments demonstrated that this abnormality on conflict trials was not due to a failure in distinguishing the contexts. Rather, these data reveal the selective involvement of the rat retrosplenial cortex in response conflict, and so extend the frontal system underlying cognitive control.

Item Type: Article
Date Type: Publication
Status: Published
Schools: MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Medicine
Psychology
Neuroscience and Mental Health Research Institute (NMHRI)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > R Medicine (General)
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher: CSH Press
ISSN: 1072-0502
Funders: BBSRC
Date of First Compliant Deposit: 30 March 2016
Date of Acceptance: 26 September 2013
Last Modified: 16 May 2019 22:35
URI: http://orca.cf.ac.uk/id/eprint/58399

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