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Dissociations in the effect of delay on object recognition: evidence for an associative model of recognition memory

Tam, Shu K.E.; Robinson, Jasper; Jennings, Dómhnall J.; Bonardi, Charlotte

Authors

Shu K.E. Tam

Jasper Robinson

Dómhnall J. Jennings

Charlotte Bonardi



Abstract

Rats were administered 3 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 2 familiar objects, 1 of which had been presented more recently than the other; and, in the object-in-place task, they discriminated among 4 previously presented objects, 2 of which were presented in the same locations as in preexposure and 2 in different but familiar locations. In each task animals were tested at 2 delays (5 min and 2 hr) between the sample and test phases in the SOR and object-in-place task, and between the 2 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. These findings are interpreted within the framework of Wagner’s (1981) model of memory.

Journal Article Type Article
Publication Date Jan 1, 2014
Journal Journal of Experimental Psychology: Animal Learning and Cognition
Print ISSN 2329-8456
Electronic ISSN 2329-8464
Publisher American Psychological Association
Peer Reviewed Peer Reviewed
Volume 40
Issue 1
APA6 Citation Tam, S. K., Robinson, J., Jennings, D. J., & Bonardi, C. (2014). Dissociations in the effect of delay on object recognition: evidence for an associative model of recognition memory. Journal of Experimental Psychology: Animal Learning and Cognition, 40(1), doi:10.1037/xan0000003
DOI https://doi.org/10.1037/xan0000003
Publisher URL http://psycnet.apa.org/record/2013-31306-001?doi=1
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information ©American Psychological Association, 2014. This paper is not the copy of record and may not exactly replicate the authoritative document published in the APA journal. Please do not copy or cite without author's permission. The final article is available, upon publication, at: http://dx.doi.org/10.1037/xan0000003

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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