【摘要】 本实验就形态学方法与生理学技术相结合,以较局限的辣根过氧化物酶微电泳法探讨兔尾核头部的一些神经元与扣带回的神经联系。一、刺激尾核头部可抑制扣带回前部神经元的放电活动,通过辣根过氧化物酶的微电泳,可以将这两部分对应的神经元显示出来。二、尾核头部的某些神经元对扣带回前部神经元有直接的投射关系,它们的联系是通过单突触实现的,其末梢的分布也比较集中。更多还原

【Abstract】 The cingulate cortex, especially its anterior portion has been found to be connected with the head of the caudate nucleus in our previous study. In order to ensure accurate placement of adequate amounts of HRP in the cingulate cortex, a microiontophoretic delivery technique coupled with single cell recording was employed. The use of electrophysiological criteria as aids in placing the injection is described in detail. It was found that the influence of the caudate neuron was inhibitory, and the cingulate neurons responded with monosynaptic IPSPs to caudate neuron stimulation. Following HRP injections into the cingulate cortex, the retrogradely labeled cells were found in the head of the caudate nucleus. It is obvious that some neurons of the head of caudate nucleus which have inhibitory effect on unit discharge of the cingulate cortex project to the anterior portion of the cingular cortex.更多还原