TITLE:
Neuro-Modulation in Dorsal Premotor Cortex Facilitates Human Multi-Task Ability
AUTHORS:
Yusuke Suzuki, Eiichi Naito
KEYWORDS:
Transcranial Direct Current Stimulation (tDCS); Psychological Refractory Period (PRP); Dorsal Premotor Cortex (PMD); Response Selection
JOURNAL NAME:
Journal of Behavioral and Brain Science,
Vol.2 No.3,
August
31,
2012
ABSTRACT: Humans are limited in their ability to perform multiple cognitive-motor tasks in parallel. In eight participants, we examined whether transcranial direct current stimulation (tDCS) to dorsal premotor cortex (PMD) could attenuate a delay of reaction time (RT) while the participants responded to two visual stimuli presented in temporally close succession. We provided anodal, cathodal, or sham tDCS while the participants performed a task requiring two choice responses or a control task requiring two fixed responses. When the interval between the two stimuli was shorter, the RTs were delayed in both tasks, but anodal tDCS shortened them only in the former task, probably by promoting the response selection function of PMD. Non-invasive neuro-modulation to the brain can boost human ability to multi-task.