Subtelencephalic locale of reinforcement and learning: looking for the minimal necessary structures |
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| Authors: | J P Huston C Tomaz |
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| Institution: | 1. Nanomaterials Application Laboratory, Department of Physics, The Institute of Science, Madam Cama Road, Fort, Mumbai, Maharashtra 400032, India;2. Research Centre in Physics, Department of Physics, Baburaoji Gholap College, Sangvi, Pune, Maharashtra 411027, India;3. Department of Chemistry, College of Science, Bld-5, King Saud University, P.O.Box. 2455, Riyadh 11451, Saudi Arabia;4. Department of Physics, Veermata Jijabai Technological Institute, Matunga, Mumbai, Maharashtra 400019, India;5. SRM Institute of Science and Technology, Delhi-NCR Campus, Modinagar, Ghaziabad, India;6. Department of Materials Science and Engineering and Chemical Engineering, Universidad Carlos III de Madrid, Avenida de la Universidad 30, 28911 Leganés, Madrid, Spain |
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| Abstract: | This report summarizes 4 experiments which deal with the effects of surgical removal of the rat's telencephalic forebrain structures on performance of an inhibitory avoidance response, which was acquired either before or after the lesion was made. Two experiments provide evidence that inhibitory avoidance learning (using the single-trial up-hill avoidance task) is still possible after removal of all of the forebrain structures except for the hypothalamus. A third study using this preparation dealt with the question of whether this conditioned avoidance response can be eliminated as a consequence of it being punished. In a further experiment the conditioned avoidance response was established prior to ablation of the telencephalon plus thalamus. Recall of the conditioned response survived the lesion, suggesting that the avoidance response is also stored at a subtelencephalic level in the brain-intact animal. |
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