Temporally stable beta sensorimotor oscillations and corticomuscular coupling underlie force steadiness
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
Julkaistu sarjassa
NeuroimageTekijät
Päivämäärä
2022Tekijänoikeudet
© 2022 The Authors. Published by Elsevier Inc.
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.
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Julkaisija
Elsevier BVISSN Hae Julkaisufoorumista
1053-8119Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/150998414
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- Liikuntatieteiden tiedekunta [3013]
Rahoittaja(t)
Suomen AkatemiaRahoitusohjelmat(t)
Akatemiatutkija, SA; Akatemiatutkijan tutkimuskulut, SA; Profilointi, SALisätietoja rahoituksesta
Scott Mongold, Thomas Legrand, and Mathieu Bourguignon were supported by the Fonds de la Recherche Scientifique (F.R.S.-FNRS, Brussels, Belgium; grant MIS F.4504.21). Harri Piitulainen was supported by the Academy of Finland (grants 266133, 296240, 326988, 327288 and 311877) including ”Brain changes across the life-span” profiling funding to University of Jyväskylä.Lisenssi
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