GABA神经元在金黄地鼠视觉中枢的分布

本文用免疫细胞化学技术研究了GABA在金黄地鼠视觉中枢的分布特征,同时用统计学方法作了定量分析,结果表明:GABA阳性神经元分布在整个视皮层和上丘中,呈不均匀分布,外膝体中GABA阳性神经元密度较低.视皮层中GABA阳性神经元密度为781mm~2,占视皮层细胞总数的19.7%,上丘中其密度为812/mm~2,占22.3%,视皮层Ⅰ层中GABA阳性神经元为52%,上丘表层(浅灰层及视觉层GABA阳性神经元为56%,GABA阳性神经元包括不同类型的细胞.在视皮层中可观察到GABA免疫疫应阳性的锥体细胞.

DISTRIBLTION OF GABA - EVLMUNOREACTIVE NEURONS IN THE VISUAL CENTRE OF THE HAMSTER

Distribution of GABA - immunoreactive neurons in the visual centre of the Hamster was studied by immunocytochemical technique and the quantitative analysis was made statistically. The results show that GABA-positive neurons are distributed ihrough all layers of the visual cortex and the superior colliculus. The density of the immunoreactive neurons in the lateral genicular body is tower. An average of 19.7% of the neuroas were immunoreactive for GABA in visual cortex and they are 52% in layer I of visual cortex. In superior colliculus 22.3% of its neurons were GABA-immunoreactive and they were 17.1% in deep layers of it. GABA-immunoreactive neurons include different type of cells. There are some immunopositive pyramidal neurons in the visual cortex.