Noninvasive brain stimulation over M1 and DLPFC cortex enhances the learning of bimanual isometric force control

Yan Jin, Jaehyuk Lee, Sungyong Kim, Bum-Chul Yoon

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Motor learning plays an important role in upper-limb function and the recovery of lost functionality. This study aimed to investigate the relative impact of transcranial direct current stimulation (tDCS) on learning in relation to the left primary motor cortex (M1) and left dorsolateral prefrontal cortex (DLPFC) during bimanual isometric force-control tasks performed with both hands under different task constraints. In a single-blind cross-over design, 20 right-handed participants were randomly assigned to either the M1 group (n = 10; mean age, 22.90 ± 1.66 years, mean ± standard deviation) or the DLPFC group (n = 10; mean age, 23.20 ± 1.54 years). Each participant received 30 min of tDCS (anodal or sham, applied randomly in two experiments) while performing the bimanual force control tasks. Anodal tDCS of the M1 improved the accuracy of maintenance and rhythmic alteration of force tasks, while anodal tDCS of the DLPFC improved only the maintenance of the force control tasks compared with sham tDCS. Hence, tDCS over the left M1 and DLPFC has a beneficial effect on the learning of bimanual force control.

Original languageEnglish
Pages (from-to)73-83
Number of pages11
JournalHuman Movement Science
Volume66
DOIs
Publication statusPublished - 2019 Aug 1

Keywords

  • Bimanual force control
  • Dorsolateral prefrontal cortex
  • Motor learning
  • Primary motor cortex
  • Transcranial direct current stimulation

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Experimental and Cognitive Psychology

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