EEG activity over ipsilateral and contralateral M1 during simple and complex hand tasks: variations with motor learning.

ABSTRACT:

Introduction

The functional role of the ipsilateral primary motor cortex (iM1) activation in motor skill acquisition is widely researched; however, its interaction with task complexity remains unclear. This study aimed to address a critical gap in motor neuroscience: how the electroencephalogram (EEG) activation dynamics (specifically in the gamma frequency band) recorded by electrodes over the contralateral primary motor cortex (cM1) and iM1 evolve during the acquisition of simple vs. complex motor skills, and whether these dynamics are modulated by hand dominance.

Methods

In a randomized controlled trial, 48 right-handed participants were randomly assigned to train on either simple or complex visuomotor tasks using their right (SR, CR, respectively) or left hand (SL, CL, r

SUBMITTER: Zhao J 

PROVIDER: S-EPMC12631381 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature