人体皮肤刺激引起的运动单位募集阈值的变化。
Changes in the recruitment threshold of motor units produced by cutaneous stimulation in man.
作者信息
Garnett R, Stephens J A
出版信息
J Physiol. 1981 Feb;311:463-73. doi: 10.1113/jphysiol.1981.sp013598.
Abstract
- The effect of cutaneous stimulation on the recruitment of motor units has been studied during slowly increasing voluntary contractions of human first dorsal interosseous muscle. 2. Continuous electrical stimulation of the index finger at 4 x threshold for perception caused an increase in the recruitment threshold of units normally recruited at contraction strengths less than 1.5 N and a decrease in the recruitment threshold of units normally recruited at contraction strengths greater than 1.5 N. 3. It is concluded that the recruitment order of motor units during gradually increasing voluntary muscle contraction is not fixed but depends in part on cutaneous input.
摘要
- 在人类第一背侧骨间肌缓慢增强的自主收缩过程中，研究了皮肤刺激对运动单位募集的影响。2. 以4倍感觉阈值对食指进行连续电刺激，导致在收缩强度小于1.5 N时正常募集的运动单位的募集阈值升高，而在收缩强度大于1.5 N时正常募集的运动单位的募集阈值降低。3. 得出的结论是，在逐渐增强的自主肌肉收缩过程中，运动单位的募集顺序不是固定的，而是部分取决于皮肤输入。
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