Study of cerebral cortico-cortical coherence during motor practice

Tércio Apolinário-Souza; Guilherme M. Lage; Lidiane A. Fernandes

doi:10.20338/bjmb.v17i5.359

Study of cerebral cortico-cortical coherence during motor practice

Authors

Tércio Apolinário-Souza Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil - edf.tercio@hotmail.com https://orcid.org/0000-0002-2136-0238
Guilherme M. Lage Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil https://orcid.org/0000-0001-8296-3676
Lidiane A. Fernandes Universidade Federal de Juiz de Fora, Governador Valadares, MG, Brazil https://orcid.org/0000-0001-8909-1612

DOI:

https://doi.org/10.20338/bjmb.v17i5.359

Keywords:

Motor learning, Motor control, Implicit learning, Neurophysiology

Abstract

BACKGROUND: Coherence is one of the neural mechanisms related to communication and plasticity. The literature presents two divergent results regarding coherence and motor practice. One result suggests a decrease in coherence during practice, while the other indicates an increase in coherence throughout practice.

AIM: Considering these two divergent results in the literature, this study aimed to examine the role of coherence in motor practice. We hypothesize that electrode pairs related to C3 (C3-P3 and C3-F3) show an increase of coherence during practice, while electrodes less related to motor action (F4, C4, and P4) may exhibit decreased.

METHOD: Twenty-four right-handed participants practice 120 trials of a sequential key-pressing task.

RESULTS: The results indicated, in the alpha upper and theta bands, from initiation to end of practice, the coherence increased in the F3-C3 electrode pair and decreased in the C3-C4, C3-P3, P3-P4, F3-P3, and C4-P4 electrodes pairs.

CONCLUSION: The results partially confirmed the hypothesis. The coherence increases in the electrode pairings related to the motor execution and decreases between the lesser related. During the motor learning process, communication reduction occurred in groups of neurons not associated with the stimulus, and the potentiation of synaptic plasticity within groups of neurons associated with the stimulus occurred.

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Published

2023-09-30

How to Cite

Apolinário-Souza, T., Lage, G. M., & Fernandes, L. A. (2023). Study of cerebral cortico-cortical coherence during motor practice. Brazilian Journal of Motor Behavior, 17(5), 254–265. https://doi.org/10.20338/bjmb.v17i5.359

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Issue

Vol. 17 No. 5 (2023)

Section

Research Articles

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Authors retain the copyright of their paper and grant the Brazilian Journal of Motor Behavior (BJMB) the right to first publish the work under a Creative Commons Attribution-NonCommercial-NoDerivatives license (CC BY-NC-ND). This license allows users to share the paper given the appropriate credit to the author and source and does not allow commercial uses and derivative materials to be produced.