| Overshadowing and blocking between landmark learning and shape learning: the importance of sex differences. | |
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MedLine Citation:
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PMID: 21472414 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Rats were trained in a triangular-shaped pool to find a hidden platform that maintained a constant relationship with two sources of information, an individual landmark and one part of the pool with a distinctive shape. In Experiment 1, shape learning overshadowed landmark learning but landmark learning did not overshadow shape learning in males, while landmark learning overshadowed shape learning but shape learning did not overshadow landmark learning in females. In Experiment 2, rats were pretrained either with the single landmark relevant or with the shape relevant, in the absence of the alternative cue. Final test trials, without the platform, revealed reciprocal blocking only in females; in males, shape learning blocked landmark learning, but not viceversa (Experiment 2a). In Experiment 2b, male rats received a longer pretraining with the single landmark relevant, and now landmark learning blocked shape learning. The results thus confirm the claim that males and females partially use different types of spatial information when solving spatial tasks. These results also agree with the suggestion that shape learning interacts with landmark learning in much the same way as does learning about any pair of stimuli in a Pavlovian conditioning experiment. |
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Authors:
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Clara A Rodríguez; V D Chamizo; N J Mackintosh |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-7 |
Journal Detail:
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Title: Learning & behavior Volume: - ISSN: 1543-4494 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101155056 Medline TA: Learn Behav Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Departament de Psicologia Bàsica, Facultat de Psicologia, Institute for Brain, Cognition and Behavior (IR3C), Universitat de Barcelona, Passeig de la Vall d'Hebron 171, Barcelona, 08035, Spain, claraarodriguez@ub.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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