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Author Spotlight: Using Motor Imagery Brain-Computer Interface to Improve Motor and Cognitive Function in Stroke Patients
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Experience modulates motor imagery-based brain activity.

Sarah N Kraeutner1,2, Sean R McWhinney2, Jack P Solomon1,2

  • 1Laboratory for Brain Recovery and Function, Dalhousie University, Halifax, NS, Canada.

The European Journal of Neuroscience
|March 8, 2018
PubMed
Summary
This summary is machine-generated.

Motor imagery (MI) brain activation is influenced by experience. Novice performance during MI involves more widespread brain activity, recruiting additional regions across both hemispheres, unlike expert performance.

Keywords:
event-related desynchronizationexpertisemagnetoencephalographysource analysis

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Area of Science:

  • Neuroscience
  • Motor Control
  • Cognitive Science

Background:

  • Motor imagery (MI), the mental rehearsal of movement, often shows diffuse brain activation patterns similar to novice physical performance.
  • It remains unclear if this diffuse activation is due to lack of task experience or an inherent feature of MI.

Purpose of the Study:

  • To investigate how prior experience modulates brain activity during motor imagery.
  • To differentiate the neural correlates of MI based on task-specific expertise.

Main Methods:

  • Used magnetoencephalography (MEG) to record brain activity in expert (athletes) and novice (controls) groups.
  • Participants performed MI of four multi-articular tasks with varying levels of participant experience.
  • Applied source-level analysis and linear mixed effects modeling to analyze task-related brain activity.

Main Results:

  • MI of tasks with low participant experience showed more widespread and bilateral brain activation within groups.
  • Limited differences in brain activation were observed during MI of tasks where participants had similar experience between groups.
  • Novice MI performance was associated with the recruitment of additional brain regions across both hemispheres.

Conclusions:

  • Brain activity during motor imagery is significantly modulated by an individual's prior experience with the task.
  • Task-specific expertise influences the neural networks engaged during mental rehearsal.
  • Future research on the neural basis of MI should account for participant experience.