Publications by authors named "Isabelle Vernon"
Article Synopsis
- High contralesional M1 activity is observed in stroke patients with upper limb impairments, but its exact mechanisms and effects on function remain unclear, affecting treatment development.
- The study aimed to explore whether this activity correlates with motor task demands, particularly focusing on precision during hand movements, using fMRI and electromyography data from both stroke patients and healthy controls.
- Findings indicated that while both groups showed increased brain activity with higher task demands, stroke patients exhibited less consistent activation and poorer performance compared to healthy controls, suggesting altered brain function related to motor task precision in those recovering from stroke.
In functional magnetic resonance imaging (fMRI) studies, performance of unilateral hand movements is associated with primary motor cortex activity ipsilateral to the moving hand (M1), in addition to contralateral activity (M1). The magnitude of M1 activity increases with the demand on precision of the task. However, it is unclear how demand-dependent increases in M1 recruitment relate to the control of hand movements.
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