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[兔视觉皮层中的局灶性诱发电位:电流源密度分析]

[Focal evoked potentials in the rabbit visual cortex: density analysis of current sources].

作者信息

Supin A Ia

出版信息

Neirofiziologiia. 1981;13(5):474-81.

PMID:7300957
Abstract

Focal evoked potentials were elicited in the rabbit visual cortex by punctiform light stimuli and analyzed by the current source density technique. They contained two main components. The first component was generated by local sink at depths form 0.6 to 1.0 mm (layer IV) with 30 ms latency and peak time about 50 ms. The second one was generated by less local sink at depths form 0.2-0.3 to 1.3-1.5 mm (layers III-VI) with peak time 90-100 ms. These two sinks are considered as active and indicating the localization of depolarizing synapses. Passive sources are dissipated around the zone of the active sinks.

摘要

通过点状光刺激在兔视觉皮层诱发出局灶性诱发电位,并采用电流源密度技术进行分析。它们包含两个主要成分。第一个成分由深度在0.6至1.0毫米(IV层)处的局部汇产生,潜伏期为30毫秒,峰值时间约为50毫秒。第二个成分由深度在0.2 - 0.3至1.3 - 1.5毫米(III - VI层)处较弱的局部汇产生,峰值时间为90 - 100毫秒。这两个汇被认为是活跃的,指示去极化突触的定位。无源在活跃汇的区域周围消散。

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