Visual Gain and Feedback Significantly Influence Alpha-Band Corticomuscular Coherence in Plantar Flexion Isometric Force Task

Autor(es)

Guerrero-Mendez, Cristian D. ; Pinheiro, Felipe C. ; de Toledo, Diana R. ; de Lima, Felipe F. ; Kohn, Andre F. ; Elias, Leonardo A.

• Tipo de documento: Artigo Científico
• Fonte: CONVERGING CLINICAL AND ENGINEERING RESEARCH ON NEUROREHABILITATION V, ICNR 2024, VOL 1; v. 31, p. 5-pg., 2025-01-01.

Resumo

Visual feedback is essential to maintain force steadiness during isometric contractions, but its effect depends on the specific feedback provided. Here, we used corticomuscular coherence (CMC) to investigate the effects of different visual gains (sensitivity of visual feedback at high, medium, and low levels) and the presence or absence of feedback on force control. Eight healthy adults were involved, recording the intramuscular electromyogram (iEMG) of the soleus muscle and electroencephalogram (EEG) of the primary motor cortex region. The results indicated that the alpha frequency band exhibited significant differences (p<0.05) in CMC between high and low visual gain, and between the presence and absence of visual feedback. These findings highlight the sensitivity of the alpha band to visuomotor integration during isometric force motor control tasks. (AU)

• Processo FAPESP: 13/10433-1 - Estudo das propriedades de disparo de unidades motoras dos músculos extensores e flexores do tornozelo durante modulações senoidais do torque e de ângulo articulares
• Beneficiário: Leonardo Abdala Elias
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 24/03533-4 - Registro de sinais mioelétricos em alta densidade e avaliação do sistema de neurorreabilitação baseado em inteligência artificial
• Beneficiário: Cristian David Guerrero Mendez
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico