Successful overshadowing and blocking in hippocampectomized rats
| Autor: | M. M. Cotton, Joram Feldon, Glyn Goodall, Paul Garrud, N. J. Mackintosh, J. N. P. Rawlins |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Cerebral Cortex
Male genetic structures Rhinencephalon Association Learning Neutral stimulus Rats Inbred Strains Stimulus (physiology) Hippocampus Corpus Callosum Rats Discrimination Learning Behavioral Neuroscience Cortical control Conditioning Psychological Conditioning Animals Learning Attention Conditioned Suppression Psychology Neuroscience |
| Popis: | Overshadowing (Experiment 1) and blocking (Experiment 2) were investigated using a conditioned suppression paradigm in rats. Neither hippocampectomy nor cortical control lesions affected the extent to which a salient stimulus overshadowed a less salient one. Nor did the lesions affect the extent to which a stimulus that was highly correlated with shock overshadow a stimulus that was less well correlated with shock. Finally, the lesions did not alter the extent to which a previously reinforced stimulus blocked conditioning to another stimulus when both were presented as a reinforced compound stimulus. It is thus possible for hippocampectomized rats to show apparently normal overshadowing and blocking, at least under some testing conditions. |
| Databáze: | OpenAIRE |
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