A1 Journal article (refereed)
Task-Modulated Corticocortical Synchrony in the Cognitive-Motor Network Supporting Handwriting (2020)

Saarinen, T., Kujala, J., Laaksonen, H., Jalava, A., & Salmelin, R. (2020). Task-Modulated Corticocortical Synchrony in the Cognitive-Motor Network Supporting Handwriting. Cerebral Cortex, 30(3), 1871-1886. https://doi.org/10.1093/cercor/bhz210

JYU authors or editors

Publication details

All authors or editors: Saarinen, Timo; Kujala, Jan; Laaksonen, Hannu; Jalava, Antti; Salmelin, Riitta

Journal or series: Cerebral Cortex

ISSN: 1047-3211

eISSN: 1460-2199

Publication year: 2020

Volume: 30

Issue number: 3

Pages range: 1871-1886

Publisher: Oxford University Press

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1093/cercor/bhz210

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/68475


Both motor and cognitive aspects of behavior depend on dynamic, accurately timed neural processes in large-scale brain networks. Here, we studied synchronous interplay between cortical regions during production of cognitive-motor sequences in humans. Specifically, variants of handwriting that differed in motor variability, linguistic content, and memorization of movement cues were contrasted to unveil functional sensitivity of corticocortical connections. Data-driven magnetoencephalography mapping (n = 10) uncovered modulation of mostly left-hemispheric corticocortical interactions, as quantified by relative changes in phase synchronization. At low frequencies (~2-13 Hz), enhanced frontoparietal synchrony was related to regular handwriting, whereas premotor cortical regions synchronized for simple loop production and temporo-occipital areas for a writing task substituting normal script with loop patterns. At the beta-to-gamma band (~13-45 Hz), enhanced synchrony was observed for regular handwriting in the central and frontoparietal regions, including connections between the sensorimotor and supplementary motor cortices and between the parietal and dorsal premotor/precentral cortices. Interpreted within a modular framework, these modulations of synchrony mainly highlighted interactions of the putative pericentral subsystem of hand coordination and the frontoparietal subsystem mediating working memory operations. As part of cortical dynamics, interregional phase synchrony varies depending on task demands in production of cognitive-motor sequences.

Keywords: cognitive processes; motor functions; writing; cerebral cortex; MEG

Free keywords: DICS; MEG; functional connectivity; language production; movement sequence

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 3

Last updated on 2022-17-06 at 11:51