title: Enhancement of precise hand movement by transcranial direct current stimulation.
abstract: The effect of transcranial direct current stimulation (tDCS) on the precise nondominant hand movement was investigated by applying anodal stimulation over the right primary motor cortex. We recruited 14 healthy participants for this single-blind, sham-controlled crossover trial. A circle-drawing task was performed before, immediately after, and at 30 min after 20 min of 1 mA anodal or sham tDCS. Anodal tDCS, compared with sham stimulation, significantly improved the circle-drawing task compared with sham stimulation. The deviation area and path length of the task were significantly decreased after anodal tDCS application and were further enhanced at 30 min after stimulation. These results suggest that anodal tDCS over the primary motor cortex enhances the precise movement of the nondominant hand for 30 min in healthy participants.
authors.affiliation: Department of Physical Therapy, Faculty of Health Science, Kio University, Kitakatsuragi-gun, Nara, Japan. a.matsuo@kio.ac.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Matsuo
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Maeoka
authors.forename: Makoto
authors.initials: M
authors.lastname: Hiyamizu
authors.forename: Koji
authors.initials: K
authors.lastname: Shomoto
authors.forename: Shu
authors.initials: S
authors.lastname: Morioka
authors.forename: Keiko
authors.initials: K
authors.lastname: Seki
mesh_terms: D001931:Brain Mapping; D018592:Cross-Over Studies; D004558:Electric Stimulation / Q000379:methods*; D005260:Female; D006225:Hand / Q000502:physiology*; D006801:Humans; D008297:Male; D009044:Motor Cortex / Q000502:physiology*; D009068:Movement / Q000502:physiology*; D016037:Single-Blind Method; D055815:Young Adult