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The role of the hippocampus in passive and active spatial learning

Kosaki, Yutaka, Lin, Tzu-Ching Esther, Horne, Murray R., Pearce, John M. and Gilroy, Kerry E. 2014. The role of the hippocampus in passive and active spatial learning. Hippocampus 24 (12) , pp. 1633-1652. 10.1002/hipo.22343

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Rats with lesions of the hippocampus or sham lesions were required in four experiments to escape from a square swimming pool by finding a submerged platform. Experiments 1 and 2 commenced with passive training in which rats were repeatedly placed on the platform in one corner—the correct corner—of a pool with distinctive walls. A test trial then revealed a strong preference for the correct corner in the sham but not the hippocampal group. Subsequent active training of being required to swim to the platform resulted in both groups acquiring a preference for the correct corner in the two experiments. In Experiments 3 and 4, rats were required to solve a discrimination between different panels pasted to the walls of the pool, by swimming to the middle of a correct panel. Hippocampal lesions prevented a discrimination being formed between panels of different lengths (Experiment 3), but not between panels showing lines of different orientations (Experiment 4); rats with sham lesions mastered both problems. It is suggested that an intact hippocampus is necessary for the formation of stimulus-goal associations that permit successful passive spatial leaning. It is further suggested that an intact hippocampus is not necessary for the formation of stimulus-response associations, except when they involve information about length or distance.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Publisher: Wiley-Blackwell
ISSN: 1050-9631
Funders: BBSRC, Wellcome Trust
Date of First Compliant Deposit: 30 March 2016
Date of Acceptance: 8 August 2014
Last Modified: 18 Nov 2018 22:08

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