NUMBER AND RELATIVE SIZE OF THENAR MOTOR UNITS ESTIMATED BY AN ADAPTED MULTIPLE POINT STIMULATION METHOD
NUMBER AND RELATIVE SIZE OF THENAR MOTOR UNITS ESTIMATED BY AN ADAPTED MULTIPLE POINT STIMULATION METHOD
复制标题
DOI：
10.1002/mus.880180908
复制
发表时间：
1995-09-01
期刊：
影响因子：
3.4
通讯作者：
DELWAIDE, PJ
中科院分区：
文献类型：
--
作者：
WANG, FC;DELWAIDE, PJ
介绍了一种自适应多点刺激（AMPS）方法，用于估计鱼际运动单位的数量和相对大小。为了避免交替刺激，在每一个点通过增量刺激仅募集两个或三个可清楚识别的表面记录的运动单位动作电位（S-MUAP）。从四到五个不同的刺激点引出的总共10个S-MUAP用于计算平均S-MUAP大小。通过将最大M-电位大小除以该值，得到运动单位数估计值（MUNE）。在59名19至87岁的健康志愿者中，平均S-MUAP大小为87 +/-27.6 μ V。平均MUNE为278 ± 113个运动单位，重复进行时，结果可重复。运动单位的数量随着年龄的增长呈指数下降，而平均S-MUAP大小仅适度增加。为评价AMPS法的有效性，将其结果与F-反应技术的结果进行相关分析，相关系数为0.83（P < 0.001）。(C)1995年，John Wiley and Sons，Inc.
An adapted multiple point stimulation (AMPS) method is described for estimating the number and relative size of thenar motor units. With this method, the median nerve was stimulated at various sites from the wrist to the elbow, To avoid alternation, only two or three clearly identifiable surface-recorded motor unit action potentials (S-MUAPs) were recruited at each point by incremental stimulation. A total of 10 S-MUAPs, elicited from four to five distinct stimulation points, was used to calculate the average S-MUAP size. By dividing the maximum M-potential size by that value, a motor unit number estimate (MUNE) was derived, In 59 healthy volunteers, from 19 to 87 years old, the mean average S-MUAP size was 87 +/- 27.6 mu V . ms and the mean MUNE was 278 +/- 113 motor units, When performed repeatedly, the results were reproducible. The number of motor units declined exponentially with age while average S-MUAP sizes increased only moderately. To assess the validity of the AMPS method, its results were correlated with those obtained using the F-response technique, The correlation coefficient was 0.83 (P < 0.001). (C) 1995 John Wiley and Sons, Inc.