The relationship between body sway and opposite-current duration affected by Counter Current Stimulation using non-perceptive current in Galvanic Vestibular Stimulation

Abstract

This study revealed the relationship between evoked body sway and insensible opposite-current duration of Counter Current Stimulation (CCS) in Galvanic Vestibular Stimulation (GVS). GVS is expected to apply the walking navigation system and so on. Evoked sway has correlation with current strength however current strength and duration are limited by the safety guidelines that we established through the discussion with medical doctor. GVS current cannot give enough large sway within this guideline. Here, CCS may give the solution of this problem. In our previous study shows that CCS with long opposite current duration can enhance subjective acceleration sensation or virtual head motion evoked by GVS. Therefore, we thought that CCS also evokes large sway and opposite current duration will be affects this enhancement.