SPECIFIC IMPEDANCE OF CEREBRAL WHITE MATTER
SPECIFIC IMPEDANCE OF CEREBRAL WHITE MATTER
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DOI：
10.1016/0014-4886(65)90126-3
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发表时间：
1965-01-01
影响因子：
5.3
通讯作者：
NICHOLSON, PW
中科院分区：
文献类型：
--
作者：
NICHOLSON, PW
描述了一种测量脑深部结构特定阻抗的方法。它被用来测定猫内囊内大纤维束的阻抗。沿垂直于光纤方向的轴阻抗为~800[OMEGA]cm，在20 cycle/sec和20 kc/sec之间的频率上主要是电阻性的。沿光纤方向的阻抗大约是这个的九分之一。研究了电流传导的可能机制，得出的结论是，除非少突胶质细胞的膜电阻[小于或等于]8 [OMEGA] cm2，否则表明细胞外空间为~10%。
A method is described for measuring specific impedances in deep brain structures. It was used to determine the impedance in a large fiber tract in the cat internal capsule. The impedance along an axis normal to the fiber direction was ~800[OMEGA]cm and predominantly resistive at frequencies between 20 cycle/sec and 20 kc/sec. The impedance along the fiber direction was approximately one-ninth of this. Possible mechanisms of current conduction are examined and it is concluded that unless the oligodendrocyte membrane resistance is [less than or equal to]8 [OMEGA] cm2 as extracellular space of ~10% is indicated.