@article{ref1,
title="Motor cortex inhibition is increased during a secondary cognitive task",
journal="Motor control",
year="2015",
author="Holste, Katherine G. and Yasen, Alia L. and Hill, Matthew J. and Christie, Anita D.",
volume="20",
number="4",
pages="380-394",
abstract="The purpose of this study was to assess the effect of a cognitive task on motor cortex excitability and inhibition. Transcranial magnetic stimulation of the motor cortex was performed on 20 healthy individuals (18-24 years; 9 females) to measure evoked potentials (MEPs) and cortical silent periods at baseline, during, and following a secondary cognitive task. The MEP amplitude increased from 0.50 ± 0.09 to 0.87 ± 0.50 mV during a secondary cognitive task (p=0.04), and returned to baseline (0.48 ± 0.31 mV; p=0.90) post-task. The CSP duration also increased from 93.48 ± 28.76 to 113.6 ± 33.68 ms (p=0.001) during the cognitive task, and returned to baseline post-task (89.0 ± 6.9 ms; p=0.88). In the presence of a cognitive task, motor cortex excitability and inhibition were both increased relative to baseline. The increase in inhibition may help to explain the motor deficits experienced while performing a secondary cognitive task.<p /> <p>Language: en</p>",
language="en",
issn="1087-1640",
doi="10.1123/mc.2014-0047",
url="http://dx.doi.org/10.1123/mc.2014-0047"
}