Benson A J, Jobson P H
Int J Equilib Res. 1973 Jun;3(1):55-61.
A sine wave current stimulus, applied between electrodes placed about one ear and an indifferent electrode, produced a cyclical sway predominantly in the coronal plane. In 12 normal subjects, stimulus frequency (0.1-0.6 Hz) and intensity (+/-0.05 - +/-1.5 mA) had no significant effect on the amplitude of the postural response, but phase lag increased from 0.7 rad at 0.1 Hz to 3.8 rad at 0.6 Hz. Stimulation at 0.3 Hz, +/-1.0 mA evoked detectable responses in all but one of 50 normal subjects. Seven patients with end organ lesions all gave positive responses with the same test procedure. Likewise 13 out of 16 patients with destruction of the VIII nerve also gave positive responses. In the other 3 patients the response on the side of the lesion was absent, as it was in another 3 individuals with lesions of the vestibular nuclei. It was concluded that the sway induced by a low frequency alternating current is the manifestation of the stimulation of structures within the CNS central to the vestibular nerve or its end organ.
在置于一只耳朵周围的电极与无关电极之间施加正弦波电流刺激，主要在冠状平面产生周期性摆动。在12名正常受试者中，刺激频率（0.1 - 0.6赫兹）和强度（±0.05 - ±1.5毫安）对姿势反应的幅度没有显著影响，但相位滞后从0.1赫兹时的0.7弧度增加到0.6赫兹时的3.8弧度。在50名正常受试者中，除一人外，0.3赫兹、±1.0毫安的刺激均诱发了可检测到的反应。7名终器病变患者采用相同测试程序均给出阳性反应。同样，16名听神经被破坏的患者中有13名也给出阳性反应。在另外3名患者中，病变侧无反应，另外3名前庭核病变患者也是如此。得出的结论是，低频交流电诱发的摆动是对前庭神经或其终器中枢的中枢神经系统内结构进行刺激的表现。
