Gottlieb G L, Agarwal G C
J Neurol Neurosurg Psychiatry. 1971 Jun;34(3):226-30. doi: 10.1136/jnnp.34.3.226.
The Hoffmann reflex is a monosynaptic reflex elicited by electrical stimulation of afferent nerve fibres. The amplitude of the reflex response may be measured both by EMG recording from the muscle and by sensing the muscle twitch. These two effects are dependent, not only on the amplitude of the stimulus, but on the state of excitability of the afferent-efferent synaptic pools and on the mechanical state of the muscle. Voluntary control of the stimulated muscle influences these conditions but the effects on the EMG are quite different from those on the twitch. This paper discusses these effects under isometric conditions.
霍夫曼反射是一种由传入神经纤维电刺激引发的单突触反射。反射反应的幅度既可以通过肌肉的肌电图记录来测量，也可以通过感知肌肉抽搐来测量。这两种效应不仅取决于刺激的幅度，还取决于传入 - 传出突触池的兴奋性状态以及肌肉的机械状态。对受刺激肌肉的自主控制会影响这些条件，但对肌电图的影响与对抽搐的影响截然不同。本文讨论了在等长条件下的这些效应。
