Toggle Main Menu Toggle Search

Open Access padlockePrints

Dissociations in the Effect of Delay on Object Recognition: Evidence for an Associative Model of Recognition Memory

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.

Publication metadata

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


DOI: 10.1037/xan0000003


Altmetrics provided by Altmetric


Funder referenceFunder name
BB/F013191/1Biotechnology and Biological Sciences Research Council (United Kingdom)