Galvanic Body Sway Testの新たな刺激方法について

抄録

Previously we reported the method and clinical findings of the Galvanic Body Sway Test (GBST). GBST was very useful in the differential diagnosis of diseases of the labyrinth and central vestibular disorders, but it did not provide clear answers when the body sway was very large.
In order to record clear responses, we developed a new method of stimulation in the GBST.
The polarity of the stimulating current applied to one ear was reversed from positive to negative in stimulation. Very large body sway to the left and right was elicited by reversing stimulating polarity, and galvanic responses became clearer. This effect was most remarkable in cases of very large body sway.