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猫扣带回前部内脏伤害感受神经元的诱发反应

吴敏范, 滕国玺

中国医科大学脑研究所神经生理研究室.辽宁,沈阳 110001

摘要

应用玻璃微电极细胞内电位记录技术,观察了20只猫扣带回前部461个神经元对电刺激对侧内脏大神经的诱发反应及其电生理特性。在被观察的神经元中,176个为刺激相关神经元。根据诱发反应的特性,将其分为特异性内脏伤害感受神经元(114个,64.77%)、非特异性内脏伤害感受神经元(34个,19.32%)及非内脏伤害感受神经元(28个,15.91%)。诱发反应分为兴奋性(59.46%)、抑制性(22.30%)及混合性反应(18.24%)三种。285个为刺激非相关神经元。

Evoked responses of visceral nociceptive neurons in cat anterior cingulate gyrus revealed by intracellular recording techniques

Wu Minfan, Teng Guoxi

Laboratory of Neurophysiology,Brain Research Institute,China Medical University.Shenyang 110001,Liaoning

Abstract

With intracellular recording techniques, we investigated evoked responses and electrophysiological properties of neurons in anterior cingulate gyrus (ACG) to stimulating greater splanchnic nerve (GSN) in cats. Among 461 neurons, 176 were stimulus-relative and 285 stimulus-irrelative. According to the characteristics of the evoked responses, stimulus-relative neurons were classified into specific visceral nociceptive neurons (SVNNs, 64.77%), non-specific visceral nociceptive neurons (NSVNNs, 19.32%) and non-visceral nociceptive neurons (NVNNs, 15.91%). Modes of the evoked responses could be excitatory, inhibitory, or mixed ones.

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引用本文：

吴敏范, 滕国玺. 猫扣带回前部内脏伤害感受神经元的诱发反应[J]. 生理学报 2000; 52 (6): .

Wu Minfan, Teng Guoxi. Evoked responses of visceral nociceptive neurons in cat anterior cingulate gyrus revealed by intracellular recording techniques. Acta Physiol Sin 2000; 52 (6): (in Chinese with English abstract).