Related Experiment Video
Updated: Mar 9, 2026
Author Spotlight: Rehabilitation of Stroke Patients With a Digital Occupational Training System
Published on: December 29, 2023
Impaired Voluntary Movement Control and Its Rehabilitation in Cerebral Palsy
1Department of Biobehavioral Sciences, Teachers College, Columbia University, 525 West 120th Street, New York, New York, Box 93, 10027, USA. ag275@columbia.edu.
Insights
Cerebral palsy (CP) impairs upper extremity function due to early brain damage. Hand function severity links to corticospinal tract integrity, with potential for brain plasticity influencing rehabilitation outcomes.
Area of Science:
- Neuroscience
- Pediatric Neurology
- Rehabilitation Medicine
Background:
- Cerebral palsy (CP) is the most common pediatric neurological disorder, stemming from early brain damage.
- Unilateral spastic cerebral palsy (hemiplegia) is the most frequent subtype, primarily affecting upper extremity function and daily activities.
- Impaired hand function in CP is a significant challenge, impacting motor control, planning, and sensorimotor integration.
Purpose of the Study:
- To elucidate the pathophysiology and mechanisms of impaired upper extremity control in cerebral palsy.
- To explore the relationship between corticospinal tract integrity and hand function severity.
- To review motor learning-based therapies and their predictive factors for rehabilitation outcomes.
Main Methods:
- Review of the pathophysiology of impaired upper extremity control in cerebral palsy.
- Analysis of the relationship between corticospinal tract integrity and hand function.
- Examination of deficits in movement execution, planning, and sensorimotor integration.
- Discussion of bimanual movement control and mirror movements in CP.
- Evaluation of evidence for Constraint-Induced Movement Therapy and Bimanual Training.
Main Results:
- Severity of hand impairment correlates with corticospinal tract integrity.
- The developing corticospinal tract exhibits plasticity, reorganizing connectivity post-CNS injury.
- Deficits extend beyond unimanual tasks, including bimanual control and mirror movements.
- Motor learning-based therapies show promise, with potential predictors for treatment success identified.
Conclusions:
- Upper extremity impairment in CP is complex, involving motor execution, planning, and sensorimotor deficits.
- Corticospinal tract integrity and brain plasticity are key factors in hand function and rehabilitation potential.
- Constraint-Induced Movement Therapy and Bimanual Training are evidence-based approaches for improving function.
- Understanding pathophysiological predictors is crucial for optimizing CP rehabilitation strategies.
Abstract:
Cerebral palsy is caused by early damage to the developing brain, as the most common pediatric neurological disorder. Hemiplegia (unilateral spastic cerebral palsy) is the most common subtype, and the resulting impairments, lateralized to one body side, especially affect the upper extremity, limiting daily function. This chapter first describes the pathophysiology and mechanisms underlying impaired upper extremity control of cerebral palsy. It will be shown that the severity of impaired hand function closely relates to the integrity of the corticospinal tract innervating the affected hand. It will also shown that the developing corticospinal tract can reorganize its connectivity depending on the timing and location of CNS injury, which also has implications for the severity of hand impairments and rehabilitation. The mechanisms underlying impaired motor function will be highlighted, including deficits in movement execution and planning and sensorimotor integration. It will be shown that despite having unimanual hand impairments, bimanual movement control deficits and mirror movements also impact function. Evidence for motor learning-based therapies including Constraint-Induced Movement Therapy and Bimanual Training, and the possible pathophysiological predictors of treatment outcome and plasticity will be described. Finally, future directions for rehabilitations will be presented.
