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Single landmark learning in rats: Sex differences in a navigation task |
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| Authors: | L Forcano NJ Mackintosh VD Chamizo |
| Institution: | a Hospital Universitari de Bellvitge and CIBER Fisiopatologia, Obesidad y Nutricion, Instituto Salud Carlos III, Spain b Department of Experimental Psychology, University of Cambridge, Cambridge CB2 3EB, UK c Universitat de Barcelona, Facultat de Psicologia, Departament de Psicologia Bàsica, Passeig de la Vall d’Hebron 171, 08035 Barcelona, Spain |
| Abstract: | In Experiments 1 and 2, rats were trained in a Morris pool to find a hidden platform located some distance away from a single landmark. Males learned to swim to the platform faster than females, but on test trials without the platform, males, unlike females, spent less time in the platform quadrant of the pool in the second half of each test trial than in the first. They also showed greater persistence in searching in the platform quadrant over a series of extinction trials. In Experiments 3a and 3b, the problem was made easier by locating the platform closer to the solitary landmark. Now males and females learned to swim to the platform equally rapidly, and both stopped searching in the platform quadrant in the second half of each test trial. Experiment 4 ruled out the possibility that males´ shorter latencies to find the platform in Experiment 2 were due to their swimming faster than females. |
| Keywords: | Sex differences Landmark learning Different tests measures Morris pool |
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