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Lookup NU author(s): Dr Domhnall Jennings
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
Rats were administered three versions of an object recognition task: In the spontaneous object recognition task (SOR) animals discriminated between a familiar object and a novel object; in the temporal order task they discriminated between two familiar objects, one of which had been presented more recently than the other; and, in the object-in-place task, they discriminated among four previously presented objects, two of which were presented in the same location as in preexposure and two in different but familiar locations. In each task animals were tested at two delays (5 minutes and 2 hours)―between sample and test phases in the SOR and object-in-place tasks, and between the two sample phases in the temporal order task. Performance in the SOR was poorer with the longer delay, whereas in the temporal order task performance improved with delay. There was no effect of delay on object-in-place performance. In addition the performance of animals with neurotoxic lesions of the dorsal hippocampus was selectively impaired in the object-in-place task at the longer delay only. These findings are interpreted within the framework of Wagner's (1981) model of memory.
Author(s): Tam SKE, Robinson J, Jennings DJ, Bonardi C
Publication type: Article
Publication status: Published
Journal: Journal of Experimental Psychology: Animal Learning and Cognition
Year: 2014
Volume: 40
Issue: 1
Pages: 106-115
Print publication date: 01/01/2014
Online publication date: 02/09/2013
Date deposited: 04/07/2013
ISSN (print): 0097-7403
ISSN (electronic): 1939-2184
Publisher: American Psychological Association
URL: http://dx.doi.org/10.1037/xan0000003
DOI: 10.1037/xan0000003
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