摘要
本文根据容积导体中有关动作电位的电生理理论,用三点源模型模拟单根纤维动作电位(SFAP),并假设神经束的复合动作电位(CAP)是由SFAP线性叠加而成,给出了神经束CAP的模型.通过运用上述模型,计算了正常人正中神经纤维传导速度分布,分析了刺激腕部正中神经引导的传感诱发电位(SEP)的N^-_9成分;另外,还得出一些描述此外周传导通路性质的其它参数,如平均传导速度、神经纤维活动最可几传速度分布范围等.此方法可用来研究其它各种外围诱发电位.
According to the electrophysiological theory about action potential in avolume conductor, we simulate the single fiber action potential (SFAP) by using tripole model. Assuming that compound action pontential (CAP) of nerve trunk to be the linear summation of SFAP, we present a model of the nerve CAP. N9 component of somatosensory evoked potential (SEP), elicited by stimulating median nerve at the wrist,is then analyzed by computing the conduction velocity distribution of the activated median nerve fibers of normal adults. Some other parameters representing the characteristics of this peripheral tract, such as average conduction velocity, velocity range in which nerve fibers are most probably activated, are also calculated. This method can be used to analyze any kind of evoked peripherial potentials.
出处
《生物物理学报》
CAS
CSCD
北大核心
1990年第3期287-293,共7页
Acta Biophysica Sinica
基金
国家自然科学基金项目
