NEURO GLIA BIOPHYSICAL PROPERTIES AND PHYSIOLOGIC FUNCTION CAT
NEURO GLIA BIOPHYSICAL PROPERTIES AND PHYSIOLOGIC FUNCTION CAT
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DOI：
10.1126/science.167.3922.1248
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发表时间：
1970-01-01
期刊：
影响因子：
--
通讯作者：
POLLEN D A
中科院分区：
文献类型：
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作者：
TRACHTENBERG M C;POLLEN D A
新皮质神经胶质细胞的膜时间常数约为385微秒，不到贝茨细胞已知值的二十分之一。神经胶质膜电阻率低（约200至500欧姆平方厘米）。神经胶质细胞非常适合于缓冲突触接触区域的直接神经元空间，以对抗伴随突触后和尖峰活动的外部钾离子浓度的增加，并最大限度地减少钾离子向其他突触前和突触后区域的扩散。
The membrane time constant of neocortical glial cells is about 385 microseconds, less than one-twentieth the known value for the Betz cell. Glial membrane specific resistance is low (approximately 200 to 500 ohm centimeters squared). Neuroglial cells are ideally suited to buffer the immediate extraneuronal space at areas of synaptic contact against the increases in external potassium ion concentration that accompany postsynaptic and spike activity and to minimize the spread of potassium ions to other pre- and postsynaptic regions.