On the Transience of Egocentric Working Memory: Evidence From Testing the Contribution of Limbic Brain Regions

Baird, Alison Lambie, Putter, J. E., Muir, Janice L. and Aggleton, John Patrick ORCID: https://orcid.org/0000-0002-5573-1308 2004. On the Transience of Egocentric Working Memory: Evidence From Testing the Contribution of Limbic Brain Regions. Behavioral Neuroscience 118 (4) , pp. 785-797. 10.1037/0735-7044.118.4.785

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Abstract

Rats trained on a nonmatching-to-turn rule revealed that egocentric working memory is readily disrupted, hard to use, and transient. In Experiment 1, rats failed to acquire the rule in a plus-maze. Experiment 2 used 2 different plus-mazes to remove any intramaze cues. Task acquisition occurred only when rats could use direction cues (i.e., nonegocentric cues). In Experiments 3 and 4, a J maze was used to minimize the retention interval and eliminate handling rats within a trial. All rats acquired the nonmatching rule, although a 3-s retention delay severely impaired performance. Fornix lesions transiently disrupted performance of the J-maze task (Experiments 3 and 4), but neither fornix (Experiment 1) nor retrosplenial (Experiment 2) lesions impaired the plus-maze tasks.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences Psychology Medicine Neuroscience and Mental Health Research Institute (NMHRI)
Subjects:	B Philosophy. Psychology. Religion > BF Psychology R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher:	American Psychological Association
ISSN:	0735-7044
Last Modified:	18 Oct 2022 12:50
URI:	https://orca.cardiff.ac.uk/id/eprint/11380

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