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Updated: Jun 17, 2026
09:42
Motor Imagery Brain-Computer Interface in Rehabilitation of Upper Limb Motor Dysfunction After Stroke
Published on: September 1, 2023
Motor-intentional disorders in right hemisphere stroke
Sang Won Seo1, Kihyo Jung, Heecheon You
1Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
Summary
Motor-intentional disorders (MIDs) after right hemisphere stroke are common. A force dynamometer is a sensitive tool for detecting MIDs, with neglect influencing their severity.
Area of Science:
- Neuroscience
- Neurology
- Rehabilitation Medicine
Background:
- Motor-intentional disorders (MIDs) impair volitional movement initiation, maintenance, and termination.
- MIDs are more prevalent following right hemisphere brain injury compared to the left.
- Damage to premotor and prefrontal cortex regions is associated with MIDs.
Purpose of the Study:
- To determine the prevalence of MIDs in patients with right hemisphere stroke.
- To identify factors influencing the occurrence and severity of MIDs in this population.
Main Methods:
- A cohort of 25 patients with right hemisphere stroke and 12 healthy controls were evaluated.
- Participants underwent a force dynamometer test and bedside examinations.
- Force control capabilities were assessed across four distinct phases.
Main Results:
- The force dynamometer demonstrated higher sensitivity in detecting motor akinesia (38%), motor impersistence (50%), and motor perseveration (47%) compared to bedside exams.
- Patients with right hemisphere stroke exhibited significantly impaired force control compared to controls.
- The presence of neglect was correlated with the severity of MIDs, while lesion characteristics were not.
Conclusions:
- A force dynamometer is a highly sensitive instrument for the diagnosis of MIDs.
- Neglect is a significant factor influencing the frequency and severity of MIDs post-right hemisphere stroke.
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