Galvanic vestibular stimulation activates the parietal and temporal cortex in humans: A functional near-infrared spectroscopy (fNIRS) study.

Galvanic vestibular stimulation (GVS) helps stabilize subjects when balance and posture are compromised. This work aimed to define the cortical regions that GVS activates in normal subjects. We used functional near-infrared spectroscopy (fNIRS) to test the hypothesis that GVS activates similar cortical areas as a passive movement.