Pozos R S, Iaizzo P A, Petry R W
J Appl Physiol Respir Environ Exerc Physiol. 1982 Jan;52(1):226-30. doi: 10.1152/jappl.1982.52.1.226.
Comparisons were made between physiological tremor (PT), which is the involuntary oscillation produced when the leg is held in a plantarflexed position, and physiological action tremor (PAT), which is an involuntary oscillation associated with the voluntary slow raising and lowering of the heel. Frequency analysis using spectral techniques revealed a major frequency range of 6-9 Hz for PT and a major frequency range of 4-8 Hz for PAT. Computed root-mean-square (rms) acceleration values for each tremor type showed that the amplitude of PAT was significantly higher (2-5 times) than that of PT. This significant increase in amplitude occurred at specific stages of the voluntary movement. Major peaks in the spectral plots of the demodulated electromyogram signals of the soleus and tibialis anterior muscles corresponded to the frequency peaks seen with PAT.
对生理性震颤（PT）和生理性动作性震颤（PAT）进行了比较。生理性震颤是腿部保持跖屈位时产生的非自主性振荡，生理性动作性震颤是与足跟的自主缓慢抬起和放下相关的非自主性振荡。使用频谱技术进行的频率分析显示，生理性震颤的主要频率范围为6 - 9赫兹，生理性动作性震颤的主要频率范围为4 - 8赫兹。对每种震颤类型计算的均方根（rms）加速度值表明，生理性动作性震颤的幅度明显更高（2至5倍）于生理性震颤。这种幅度的显著增加发生在自主运动的特定阶段。比目鱼肌和胫骨前肌的解调肌电图信号频谱图中的主要峰值与生理性动作性震颤中观察到的频率峰值相对应。
