A1 Journal article (refereed)
Temporally stable beta sensorimotor oscillations and corticomuscular coupling underlie force steadiness (2022)


Mongold, S. J., Piitulainen, H., Legrand, T., Ghinst, M. V., Naeije, G., Jousmäki, V., & Bourguignon, M. (2022). Temporally stable beta sensorimotor oscillations and corticomuscular coupling underlie force steadiness. Neuroimage, 261, Article 119491. https://doi.org/10.1016/j.neuroimage.2022.119491


JYU authors or editors


Publication details

All authors or editors: Mongold, Scott J.; Piitulainen, Harri; Legrand, Thomas; Ghinst, Marc Vander; Naeije, Gilles; Jousmäki, Veikko; Bourguignon, Mathieu

Journal or series: Neuroimage

ISSN: 1053-8119

eISSN: 1095-9572

Publication year: 2022

Publication date: 28/07/2022

Volume: 261

Article number: 119491

Publisher: Elsevier BV

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1016/j.neuroimage.2022.119491

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82812


Abstract

As humans, we seamlessly hold objects in our hands, and may even lose consciousness of these objects. This phenomenon raises the unsettled question of the involvement of the cerebral cortex, the core area for voluntary motor control, in dynamically maintaining steady muscle force. To address this issue, we measured magnetoencephalographic brain activity from healthy adults who maintained a steady pinch grip. Using a novel analysis approach, we uncovered fine-grained temporal modulations in the beta sensorimotor brain rhythm and its coupling with muscle activity, with respect to several aspects of muscle force (rate of increase/decrease or plateauing high/low). These modulations preceded changes in force features by ∼40 ms and possessed behavioral relevance, as less salient or absent modulation predicted a more stable force output. These findings have consequences for the existing theories regarding the functional role of cortico-muscular coupling, and suggest that steady muscle contractions are characterized by a stable rather than fluttering involvement of the sensorimotor cortex.


Keywords: brain; cerebral cortex; muscles; muscle strength; press force; neuromuscular activity; MEG; neurophysiology


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Ministry reporting: Yes

Reporting Year: 2022

Preliminary JUFO rating: 2


Last updated on 2022-20-09 at 13:04