Effects of a dual task and different levels of divided attention on motor-related cortical potential.

Autor:	Hirano D; Graduate School of Health and Welfare Sciences, International University of Health and Welfare: 4-1-26 Akasaka, Minato, Tokyo, Japan.; Department of Occupational Therapy, School of Health Sciences, International University of Health and Welfare, Japan., Goto Y; Graduate School of Health and Welfare Sciences, International University of Health and Welfare: 4-1-26 Akasaka, Minato, Tokyo, Japan.; Faculty of Medicine, School of Medicine, International University of Health and Welfare, Japan.; Department of Occupational Therapy, School of Health Sciences at Fukuoka, International University of Health and Welfare, Japan., Jinnai D; Graduate School of Health and Welfare Sciences, International University of Health and Welfare: 4-1-26 Akasaka, Minato, Tokyo, Japan.; Department of Occupational Therapy, School of Health Sciences, International University of Health and Welfare, Japan., Taniguchi T; Graduate School of Health and Welfare Sciences, International University of Health and Welfare: 4-1-26 Akasaka, Minato, Tokyo, Japan.; Department of Occupational Therapy, School of Health Sciences, International University of Health and Welfare, Japan.
Jazyk:	angličtina
Zdroj:	Journal of physical therapy science [J Phys Ther Sci] 2020 Nov; Vol. 32 (11), pp. 710-716. Date of Electronic Publication: 2020 Nov 11.
DOI:	10.1589/jpts.32.710
Abstrakt:	[Purpose] The aim of this study was to investigate the effect of divided attention on motor-related cortical potential (MRCP) during dual task performance while the difficulty of the secondary task was altered. [Participants and Methods] Twenty-two right-handed healthy volunteers participated in the study. MRCPs were recorded during two tasks, a single task (ST) and a simple (S-DT) or complex dual task (C-DT). The ST involved a self-paced tapping task in which the participants extended their right index finger. In the dual task, the participants performed the ST and a visual number counting task simultaneously. [Results] The amplitude and integral value of MRCP from electroencephalography electrode C3 was significantly higher in the S-DT than in the ST, whereas they were similar between the C-DT and the ST. Medium-load divided attention (i.e., S-DT) led to significantly more changes in the MRCP magnitude than did low-load divided attention (i.e., ST). However, the MRCP of high-load divided attention (i.e., C-DT) was similar to that of low-load divided attention. [Conclusion] These results suggest that MRCP reflects the function of or network between the supplementary motor area and the dorsolateral prefrontal cortex, and may serve as a marker for screening the capacity of individuals to perform dual tasks. Competing Interests: None. (2020©by the Society of Physical Therapy Science. Published by IPEC Inc.)
Databáze:	MEDLINE
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