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In neuroscience, an F wave is one of several motor responses which may follow the direct motor response (M) evoked by electrical stimulation of peripheral motor or mixed (sensory and motor) nerves. [1]

F波是运动迟发反应，它出现在复合肌肉动作电位之后（CMAP，也直接称为M波）。 F波产生的原理是，反应起源于逆向传导的动作电位，后者传导至前角细胞并使其出现后发放电位，此动作电位沿着神经传导，再经过刺激点到达肌肉。 F波实际上是一个小的肌肉动作电位，其环路无论是传入还是传出，均为纯运动纤维，它是由1%-5%的逆行兴奋运动神经元发放，此环路无突触，因此其并非真正的反射。 因此，如果单纯感觉神经病变，F波是正常存在的。 此外，F波正常代表了整 …

F波（F wave）是运动迟发反应，它出现在复合肌肉动作电位之后。 在上肢腕部刺激正中神经和尺神经，F波出现的潜伏期常为25~32ms。 在下肢踝部刺激腓神经和胫神经，F反应出现的潜伏期为45~56ms。

The F wave is a compound action potential evoked from a muscle by a supramaximal electric stimulus to its related peripheral nerve. You might find these chapters and articles relevant to this topic. The F wave was first described by McDougal and Magladery in 1950, and was so named because it was originally recorded from foot muscles.

2004年12月1日 · F-waves could be best elicited with supramaximal stimuli of motor fibres on a mixed nerve and persisted with such a stimulus; the response was best recorded from small hand and foot muscles but could also be recorded from proximal muscles; the latency of the response decreased as the site of the stimulation was moved toward the spinal cord, and ...

2007年2月1日 · F-waves are low amplitude responses produced by antidromic activation of motoneurons. They may not appear after each stimulus and are inherently variable in latency, amplitude, and...

F-waves are low amplitude responses produced by antidromic activation of motoneurons. They may not appear after each stimulus and are inherently variable in latency, amplitude, and configuration. Meaningful analysis of F-waves requires an ...

2010年1月31日 · The F Wave The F wave was named by Magladery and Mcdougal in 1950 because it was first recorded from the intrinsic muscles of the foot (Preston and Shapiro, 1990). The F wave uses supramaximal stimulation of a motor nerve and records compound muscle action potentials from a muscle supplied by that nerve, along the most proximal segment.

F-wave persistence refers to the percentage of measurable F responses that follow a series of stimuli, and is related to the antidromic excitability of a particular motor neuron pool. The recurrence of individual motor units in a series of F waves measures the …