Training to boost brain-to-spine signals for better wrist and hand control
Official title: Operant Conditioning of the Wrist Extensor Motor Evoked Potential to Target Corticospinal Plasticity and Upper Limb Motor Recovery After Cervical Spinal Cord Injury
Run by Medical University of South Carolina · NCT06989905 · Data updated 2026-11-12
This trial will test whether 10 weeks of non-invasive brain stimulation with feedback can strengthen brain-to-spinal-cord signals and improve wrist and hand function in adults with chronic cervical spinal cord injury and weak wrist extension.
Quick facts
| Phase | Early Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 11 (estimated) |
| Sponsor | Medical University of South Carolina Academic / other |
| Locations | 1 site (Charleston, South Carolina) |
| Status | Recruiting |
| Started | May 27, 2025 |
| Main results expected | March 31, 2027 |
| Study ends | March 31, 2027 |
| Registry record updated | March 30, 2026 |
| Trial ID | NCT06989905 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults (≥18) at least six months after a spinal cord injury at or above C6 with at least some weak wrist extension and stable medication use, who can produce measurable wrist extensor EMG and an MEP.
✕Probably not a fit
Patients unlikely to benefit include those with no measurable MEP or voluntary wrist extensor activity, motoneuron injury, implanted cranial/thoracic biomedical devices, uncontrolled medical or seizure conditions, pregnancy, or contraindications to MRI.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Participants with chronic cervical spinal cord injury will complete a 10-week operant up-conditioning protocol targeting the wrist extensor motor evoked potential (MEP) using non-invasive transcranial magnetic stimulation and real-time feedback. Investigators will measure changes in corticospinal excitability by tracking MEP size and voluntary muscle activation, and will test arm and hand motor function before and after the intervention. Brain and spine MRI will be acquired pre- and post-training to relate structural and functional imaging measures to motor status and responsiveness to the protocol. The study focuses on people at least six months post-injury with some residual wrist extensor activity and uses a single-site outpatient program at an academic center.
Why it matters
Potential benefit: If successful, the protocol could increase wrist extensor activation and lead to measurable improvements in arm and hand function by enhancing corticospinal plasticity.
How similar studies have gone: Early feasibility studies have shown MEP up-conditioning can increase MEP size and corticospinal excitability, but its ability to improve arm and hand function in cervical SCI remains unproven.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adult (≥18 yrs old) * A history of injury to spinal cord at or above C6 * \>6 months post SCI * Weak wrist extension at least unilaterally * Expectation that current medication will be maintained without change for at least 3 months. Stable use of anti-spasticity medication (e.g., baclofen, diazepam, tizanidine) is accepted. Exclusion Criteria: * Motoneuron injury * Medically unstable condition * Cognitive impairment * A history of epileptic seizures * Metal implants in the cranium * Implanted biomedical device in or above the chest (e.g., a cardiac pacemaker, cochlear implant) * Extensive use of functional electrical stimulation to the arm on a daily basis * Pregnancy (due to changes in posture and potential medical instability) * Contraindications to MRI * No measurable MEP elicited in the ECR * Unable to produce any voluntary ECR EMG activity
Where it's running
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Medical University of South Carolina
Charleston, South Carolina, United States Recruiting
Study contacts
- Principal investigator: Allison Lewis, DPT, PhD — Medical University of South Carolina
- Study coordinator: Recruitment Contact
- Email: stecb@musc.edu
- Phone: 843-792-6313
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.