SPATIAL COGNITIVE ABILITY IN RATS: EFFECT OF LESIONS IN HIPPOCAMPAL FORMATION AND PREFRONTAL CORTEX AND CAUDATE-PUTAMEN
海马结构、前额皮层或尾-壳核损毁对大鼠空间认知能力的影响

The effects of hippocampal formation (HF) and prefrontal cortex(PFC)andcaudate-putamen (CP) lesions in rats were investigated in the Morris maze forthe aquisition and retention of spatial cognitive tasks. The results indicate thatboth subjects with HF and PFC lesions lead to spatial cognitive deficits. How-ever, the former usually used paratic strategeies of "no mapping"which weredifferent from the taxic strategies used by the latter. The different strategiessuggest that HF and PFC are in different levels of the spatial cognitive system,the role of HF is more important than that of PFC. The spatial cognitive abi-lity of rats was not affected by CP lesions, which indicates functional differ-entiational tendency. of homology in mammal and birds.