Effects of Transcranial Direct Current Stimulation Over the Dorsolateral Prefrontal Cortex (PFC) on Cognitive-Motor Dual Control Skills

Jae Hyuk Lee, Sung Hee Dong, Ji Chai Jeong, Bum Chul Yoon

Research output: Contribution to journalArticle

Abstract

This randomized crossover study investigated whether anodal transcranial direct current stimulation (tDCS) over the dorsolateral prefontal cortex (dlPFC) modulates memory-guided finger isometric maintenance during single motor and dual cognitive-motor tasks, based on electroencephalogram (EEG) signals. Twenty-three healthy participants (14 female; M age = 29.130 years, SD = 10.918) underwent both sham and 2-mA stimulation sessions over the dlPFC for 20 minutes, with a minimum washout period of seven days. We analyzed finger-force isometric maintenance and event-related spectral perturbation (ERSP) of the EEG during early and later phases of both tasks. We observed a significant motor accuracy improvement (p =.014) and significant variation of force output (p =.027) with significant decrease in ERSP on the dorsomedial prefrontal cortex (dmPFC) (early phase, p =.027; later phase, p =.023) only after 2 mA stimulation. Thus, anodal tDCS over the dlPFC may improve memory-guided force control during cognitive-motor dual tasks.

Original languageEnglish
Pages (from-to)803-822
Number of pages20
JournalPerceptual and Motor Skills
Volume127
Issue number5
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • cognitive-motor dual-task
  • event-related spectral perturbation
  • force maintenance
  • memory guidance
  • transcranical direct current stimulation

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Sensory Systems

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