Effects of Transcranial Direct Current Stimulation of the Vestibular System on Center-of-Gravity Shift in Healthy Adults

[Purpose] This study investigated whether inhibition of unilateral vestibular function by transcranial direct current stimulation (tDCS) facilitates center-of-gravity (CoG) displacement. [Participants and Methods] Ten healthy individuals participated in this study. During a CoG displacement task, the subjects received 3 minutes cathodal tDCS applied to right mastoid (tDCS condition) or first 30 seconds sham stimulation. The center pressure (CoP), weight load ratio, EMG lower leg were compared between pre- post-stimulation. [Results] CoP ratio significantly shifted tDCS. [Conclusion] Vestibular might be possible clinical intervention for correction displaced standing posture.