Fiaschi A
J Neurol Neurosurg Psychiatry. 1973 Aug;36(4):509-13. doi: 10.1136/jnnp.36.4.509.
The nature and the origin of the small pre-potential wave which can be recorded immediately before the main muscle action potential on indirect stimulation was studied in the median nerve of 12 normal subjects. It is considered to be a sensory antidromic response recorded from the large afferent fibres which innervate the thumb because it was recorded in all 12 subjects, and the threshold was always below the motor threshold. An antidromic response was recorded with stimulating electrodes at the thumb and recording electrodes at the palm. Both antidromic and orthodromic responses were recorded with stimulating electrodes at the palm. The amplitude of the pre-potential was higher at the recording point closest to the sensory fibres for the thumb and progressively decreased with distance in the other points.
在12名正常受试者的正中神经中，研究了在间接刺激时可在主要肌肉动作电位之前立即记录到的小预电位波的性质和起源。它被认为是从支配拇指的大型传入纤维记录到的感觉逆向反应，因为在所有12名受试者中都记录到了它，并且其阈值总是低于运动阈值。用刺激电极置于拇指、记录电极置于手掌记录到了逆向反应。用刺激电极置于手掌时，同时记录到了逆向反应和顺向反应。预电位的幅度在最靠近拇指感觉纤维的记录点处较高，并在其他点随距离逐渐降低。
