豚鼠内嗅区的传入神经联系

AFFERENTS TO THE ENTORHINAL AREA OF THE GUINEA PIG

用辣根过氧化物酶逆行追踪法对豚鼠内嗅区(entorhinal area,EA)的传入神经联系进行了探讨。得出EA可以接受来自中脑腹侧被盖区、蓝斑、背侧中缝核、中央上核、丘脑连合核、隔区的内侧隔核、斜带核,以及邻近的前梨状皮层、屏状核、两侧旁下脚、两侧前下脚和对侧内嗅区的传入纤维。这些广泛地传入联系为研究EA的整合功能提供了结构基础。

In order to analyse the origin and pathway of afferent connections to the ento-rhinal area(EA),the method of HRP have been used.Labeled neurons in the brainwere found in the contralateral EA,ipsilateral and contralateral parasubiculum andpresubiculum,claustrum,medial septal nucleus,diagonal band nucleus of Broca,reuniens of thalamus,superior central nucleus and locus ceruleus.Only the injectiondeposits which involved the lateral EA led to cell-labeling in the anterior pyriformcortex,dorsal raphe and ventral tegmental area.It is suggested that the EA canintegrate different kinds of information from very wide regions in the brain butthe neocortex.The presentstudy pays special attention to structures and someprobable functions of neuronal circuits between EA and other areas.