大脑皮质体感Ⅰ区向丘脑中央外侧核一级投射纤维起源的研究

A STUDY ON THE ORIGINATION OF PROJECTIONS OFTHE SOMATO-SENSORY AREA I(SI)TO THE CENTRAL LATERAL NUCLEUS(CL)

本文采用微电泳导入法向猫丘脑左侧中央外侧核内导入HRP液,用O-D法显示标记细胞,结果观察到在左侧皮质体感Ⅰ区第Ⅴ层内出现较多的标记细胞。这些标记细胞主要属于第Ⅴ层内的中型锥体细胞。在对侧皮质体感Ⅰ区内,未观察到HRP酶标记细胞。

The origination of the somato-sensory areaⅠ(SI),projecting to the central lateral nucleus(CL)was studied in the cat with the method of the horseradish peroxidase(HRP).Following introducing HRP into the central lateral nucleus(CL),relatively large number of labeled cells were found in the layerⅤof ipsilateral somatosensory areaⅠ(SI).They belonged to medium-sized pyramidal cells(20-28m).