Motivation and motor cortical activity can independently affect motor performance.

Autor: Meadows CC; School of Kinesiology, Auburn University, 301 Wire Road, Auburn, AL 36849, USA. Electronic address: ccm0040@auburn.edu., Gable PA; Department of Psychology, University of Alabama, 505 Hackberry Lane, P.O. Box 870348, Tuscaloosa, AL 35487, USA. Electronic address: pagable@gmail.com., Lohse KR; School of Kinesiology, Auburn University, 301 Wire Road, Auburn, AL 36849, USA. Electronic address: lohse@auburn.edu., Miller MW; School of Kinesiology, Auburn University, 301 Wire Road, Auburn, AL 36849, USA. Electronic address: mwm0024@auburn.edu.
Jazyk: angličtina
Zdroj: Neuroscience [Neuroscience] 2016 Dec 17; Vol. 339, pp. 174-179. Date of Electronic Publication: 2016 Oct 12.
DOI: 10.1016/j.neuroscience.2016.09.049
Abstrakt: The present study explored the relationship between motor-preparatory electroencephalographic (EEG) activity, motivation, and motor performance (specifically premotor reaction time [RT]). Participants performed a RT task by squeezing a hand dynamometer in response to an auditory "go" signal. We recorded EEG and electromyography to index beta-suppression and premotor RT, respectively. Participants' motivation on each trial was modulated by offering monetary incentives at different magnitudes. Mixed-effect linear regression models showed that monetary incentive predicted premotor RT when controlling for beta-suppression, and beta-suppression independently predicted premotor RT. Thus, it appears motivation and beta-suppression can facilitate motor performance independent of one another. A plausible explanation of this effect is that motivation can affect motor performance independent of the motor cortex by influencing subcortical motor circuitry.
(Copyright © 2016 IBRO. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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