Cortical current density oscillations in the motor cortex are correlated with muscular activity during pedaling exercise

Stefan Schneider; D M Rouffet; F Billaut; H K Struder

doi:10.1016/j.neuroscience.2012.10.037

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Cortical current density oscillations in the motor cortex are correlated with muscular activity during pedaling exercise

Journal article

Peer reviewed

Cortical current density oscillations in the motor cortex are correlated with muscular activity during pedaling exercise

Stefan Schneider, D M Rouffet, F Billaut and H K Struder

Neuroscience, Vol.228, pp.309-314

2013

DOI: https://doi.org/10.1016/j.neuroscience.2012.10.037

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Abstract

EEG

current density

EMG

motor cortex

Despite modern imaging techniques, assessing and localizing changes in brain activity during whole-body exercise is still challenging. Using an active electroencephalography (EEG) system in combination with source localization algorithms, this study aimed to localize brain cortical oscillations patterns in the motor cortex and to correlate these with surface electromyography (EMG)-detected muscular activity during pedaling exercise. Eight subjects performed 2-min isokinetic (90 rpm) cycling bouts at intensities ranging from 1 to 5 W kg-1 body mass on a cycle ergometer. These bouts were interspersed by a minimum of 2 min of passive rest to limit to development of peripheral muscle fatigue. Brain cortical activity within the motor cortex was analyzed using a 32-channel active EEG system combined with source localization algorithms. EMG activity was recorded from seven muscles on each lower limb. EEG and EMG activity revealed comparatively stable oscillations across the different exercise intensities. More importantly, the oscillations in cortical activity within the motor cortex were significantly correlated with EMG activity during the high-intensity cycling bouts. This study demonstrates that it is possible to localize oscillations in brain cortical activity during moderate- to high-intensity cycling exercise using EEG in combination with source localization algorithms, and that these oscillations match the activity of the active muscles in time and amplitude. Results of this study might help to further evaluate the effects of central vs. peripheral fatigue during exercise.

Details

Title: Cortical current density oscillations in the motor cortex are correlated with muscular activity during pedaling exercise
Authors: Stefan Schneider (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
D M Rouffet (Author) - Victoria University
F Billaut (Author) - Victoria University
H K Struder (Author) - German Sport University Cologne, Germany
Publication details: Neuroscience, Vol.228, pp.309-314
Publisher: Pergamon
Date published: 2013
DOI: 10.1016/j.neuroscience.2012.10.037
ISSN: 0306-4522
Organisation Unit: University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy
Language: English
Record Identifier: 99450137602621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Neurosciences

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