从第二蚓状肌记录到的运动前电位的起源是什么？

What is the origin of the premotor potential recorded from the second lumbrical?

作者信息

Takahashi Nobushige, Takahashi Osamu, Ogawa Shinji, Takahashi Morimasa

机构信息

Department of Rehabilitation Medicine, Shizuoka City Hospital, Shizuoka, Japan.

出版信息

Muscle Nerve. 2006 Dec;34(6):779-81. doi: 10.1002/mus.20606.

DOI:10.1002/mus.20606

PMID:16810692

Abstract

When recording with a palm electrode, a premotor potential (PMP) precedes the compound muscle action potential that is evoked from the second lumbrical muscle following median nerve stimulation. The origin of this PMP has been uncertain. We demonstrate that median sensory nerve action potentials (SNAPs) can be recorded orthodromically with the palm electrode and conclude that the origin of the PMP is a median SNAP arising from antidromically activated digital sensory branches.

摘要

当使用掌部电极进行记录时，在正中神经刺激后从第二蚓状肌诱发的复合肌肉动作电位之前会出现一个运动前电位（PMP）。这个PMP的起源一直不确定。我们证明，掌部电极可以正向记录正中感觉神经动作电位（SNAPs），并得出结论，PMP的起源是由逆向激活的指感觉分支产生的正中SNAP。