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  • Title: [Stabilometry and definition of the threshold of galvanic vestibular stimulation in normal subjects: an experimental study].
    Author: Petrone D, De Benedittis G, Cortese M.
    Journal: Boll Soc Ital Biol Sper; 1990 Feb; 66(2):151-7. PubMed ID: 2357333.
    Abstract:
    The effect of the galvanic stimulation on the vestibular apparatus has been evaluated by registration on the postural deviations, using a stabilometry platform. We have studied the galvanic body-sway responses in a group of normal subjects, using a binauricolar bipolar stimulation, with the electrodes attached by means of surgical tape to the mastoid area. The records of body-sway responses have demonstrated in 80% of the considered cases a significant variation of all positional parameters after a current intensity of 2 mA, according the body sways toward the positive stimulus. At the same current intensity only five of the studied subjects have shown multidirectional swinging, in three cases joined with a subjective slight sway toward the ear stimulated with positive polarity. Therefore the galvanic test, joined with the posturography, proves to be a useful auxiliary method in vestibular investigation, allowing us to lower the threshold of galvanic stimulation and to make the electric stimulus better supported for the patient.
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