Spontaneous recognition of object configurations in rats: effects of fornix lesions.

Ennaceur, Abdelkader and Aggleton, John P. (1994) Spontaneous recognition of object configurations in rats: effects of fornix lesions. Experimental Brain Research, 100 (1). pp. 85-92. ISSN 0014-4819

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Abstract

The effects of fornix lesions were examined in an object recognition memory test based on spontaneous exploration. In the standard condition an object (A) was presented in the sample phase and then presented again in the test phase alongside a new object (B). Both fornix-transected (Fx) and control (Co) rats spent more time exploring the new object than the familiar object after retention delays of 1 min and 15 min. In two configural conditions designed to test sensitivity to reconfigured stimuli, the original sample (A) was now either re-presented alongside its rearranged version (∀), or the re-arranged version itself (∀) was presented with a new object (B). In the first configural condition, both the Co and Fx rats spent more time exploring the reconfigured sample (∀) than the original version of the sample (A) following a delay of 1 min, but not 15 min. In the second configural condition, both Co and Fx rats spent more time exploring the new object (B) than the reconfigured version of the sample (∀) following a delay of 15 min but not 1 min. These present results do not support Sutherland and Rudy's hypothesis on hippocampal function; however, they demonstrate that memory of objects as well as memory of reconfigured objects could easily be examined in a test based on spontaneous exploratory behaviour.

Item Type: Article
Subjects: Sciences > Biomedical Sciences
Psychology > Neuropsychology
Sciences > Pharmacy and Pharmacology
Psychology > Psychology
Divisions: Faculty of Health Sciences and Wellbeing
Faculty of Applied Sciences > Department of Pharmacy Health and Wellbeing
Health Sciences and Wellbeing Beacon > Drug Discovery and Application Workstream
Related URLs:
Depositing User: Abdelkader Ennaceur
Date Deposited: 03 Aug 2017 07:48
Last Modified: 10 Oct 2017 20:09
URI: http://sure.sunderland.ac.uk/id/eprint/7633

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