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DYE COUPLING BETWEEN VISUAL CORTICAL(AREA 17) NEURONES OF ADULT RAT--A STUDY ON BRAIN SLICES
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- Author:
- No author available
- Journal Title:
- ACTA PHYSIOLOGICA SINICA
- Issue:
- 3
- DOI:
- 10.3321/j.issn:0371-0874.1998.03.001
- Key Word:
- 大鼠;视皮层;脑薄片;染色耦合;缝隙连接;生物胞素
Abstract： 在离体脑片上,用生物胞素(biocytin)对成年大鼠视皮层神经元进行胞内注射.在标记成功的49例中,21例(42.9%)有染色耦合现象,耦合细胞的个数从2个到5个不等,平均2.8±1.1个.其中,18例为锥体-锥体神经元之间的耦合,2例为锥体-非锥体神经元之间的耦合,1例为非锥体神经元之间的耦合.在耦合细胞中,只有5例的胞体紧靠在一起,其它细胞的胞体之间都有一定的距离,其中有1例达到了635 μm.大多数情况下(19/21例),耦合细胞的胞体位于同一层次内,只有2例胞体位于不同层次.在Ⅱ/Ⅲ、Ⅳ和Ⅴ层内都观察到染色耦合神经元,但以Ⅱ/Ⅲ层内发生染色耦合的比率为最高.比较了染色耦合与非耦合神经元的某些电生理特性,没有观察到在它们之间有明显的差别.
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