Abstract
[Purpose] We investigated the effects on standing postural control of cathodal transcranial direct current stimulation (tDCS) to the right parietal cortex. [Subjects and Methods] Ten right-handed healthy young adults participated in this study. The cathode was placed on the right parietal cortex (P4; International 10-20 system) and tha anode was placed on the left orbit. tDCS or sham stimulation was applied to each subject for 15 min at 1.5 mA intensity. The center of pressure (COP) was measured in the standing posture and head-shake standing with the eyes open and closed. [Results] In the eyes open standing posture, the total COP locus length and the Y directional root mean square significantly increased. In head-shake standing with the eyes open and closed, there were no significant differences. [Conclusion] These results suggest that the right parietal cortex contributes to standing postural control through visuospatial information processing.
