SELECTIVE LESIONS IN THE TEMPORAL HIPPOCAMPAL REGION OF THE RAT - EFFECTS ON ACQUISITION AND RETENTION OF A VISUAL-DISCRIMINATION TASK

被引:26
作者
MYHRER, T [1 ]
机构
[1] NORWEGIAN DEF RES ESTAB,DIV ENVIRONM TOXICOL,N-2007 KJELLER,NORWAY
来源
BEHAVIORAL AND NEURAL BIOLOGY | 1992年 / 58卷 / 01期
关键词
D O I
10.1016/0163-1047(92)90832-O
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
The first purpose of this study was to investigate whether lesions in the temporal region may affect acquisition or retention of a discrimination task. In Experiment 1, rats with lesions of the temporal cortex (TC), the lateral entorhinal cortex (LEC), or their interconnections were tested postoperatively in simultaneous brightness discrimination. The results show that neither TC lesions nor LEC lesions affected acquisition of the task, and only LEC lesions impaired retention. TC/LEC transections impaired both acquisition and retention. The second purpose was to investigate effects of hippocampal lesions and perforant path transections on the discrimination task (Experiment 2). Both hippocampal and perforant path lesions impaired acquisition of the task, whereas retention was unaffected. It is suggested that TC and LEC are primarily involved in information storing and that hippocampal function is primarily involved in information processing. © 1978 Academic Press, Inc.
引用
收藏
页码:8 / 15
页数:8
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