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Japanese

EFFECTS OF BILATERAL AMYGDALECTOMY ON LEVERS PRESSING FOR FOOD REWARD IN THE RABBIT Kazunori Otabe 1 , Ryungchan Kwak 1 , Takatsugu Ohi 1 , Hiroshi Niizuma 1 , Yohinobu Okudaira 1 , Tetsuya Sakamoto 1 , Jiro Suzuki 1 1Division of Neurosurgery, Institute of Brain Diseases, Tohoku University School of Medicine pp.317-326
Published Date 1978/3/1
DOI https://doi.org/10.11477/mf.1406204220
  • Abstract
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Effects for continuous reinforcement (CRF) learning and differential reinforcement of low rate (DRL) learning for food in the rabbit by bilateral amygdalectomy were examined with the Skinner box. There was no changes in general behaviour and no impediment of CRF learning. But the completion of DRL learning was delayed by amygdalectomy. In the stage of completion of DRL learning there was no difference of total number of the reinforcement and the lever pressing between the control group and amygdalectmized group. But there was the impediment of DRL learning by the analysis of frequency distribution of inter-response time and of transition probability matrix in the amygdalectimized group. We thought that this impediment of DRL learning was due to the impediment of selection of decision of lever pressing action. The memory of the preamygda-lectomy was maintained well after amygdalectomy.


Copyright © 1978, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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