NCT05157282 · VA Office of Research and Development
Spinal Cord Stimulation for Functional Recovery in Humans With Tetraplegia
What this study is about
In support of the long-term goal of developing new strategies to increase limb function after SCI, the objectives of this proposal are to: 1) Examine the behavioral and physiological effects of TESS on upper-limb muscles after cervical SCI; and 2) Maximize the recovery of reaching and grasping potential by using tailored TESS in a task-specific manner with motor training.
View original scientific description
In support of the long-term goal of developing new strategies to increase limb function after SCI, the objectives of this proposal are to: 1) Examine the behavioral and physiological effects of TESS on upper-limb muscles after cervical SCI; and 2) Maximize the recovery of reaching and grasping potential by using tailored TESS in a task-specific manner with motor training. Veterans with cervical spinal injuries and healthy volunteers will be recruited for this study.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Male and female Veterans between 18-70 years
- Chronic SCI (1 year of injury)
- Cervical injury at C8 or above - damage between cervical spinal segments will be confirmed using MRI \[preliminary data (Benavides et al., 2020) and analysis of MRIs in \~100 participants with cervical SCI confirm that the investigators can meet our recruitment goals. Note that most SCI in humans damage several spinal cord segments
- Verification of damage to cervical spinal segments will ensure that TESS electrodes will target the injured spinal cord (Benavides et al., 2020)
- Intact or impaired, but not absent, innervations in dermatomes C6, C7 and C8 during light touch and pin prick stimulus using the International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) sensory scores as tested before in our studies (Bunday and Perez, 2012; Bunday et al., 2018; Benavides et al., 2020; Jo and Perez, 2020)
- Able to produce a visible power grip with one hand
- Can score a minimum of two (2) in the cylindrical grasp the "Prehension Ability" GRASSP
- This criterion was selected to ensure that hand impairment will not interfere with the ability to perform training and the proposed tests Inclusion criteria for controls:
- Males and females (18-70 years)
- Right-handed
- Able to complete grasping
Exclusion criteria
- Uncontrolled medical problems including pulmonary, cardiovascular or orthopedic disease
- Any debilitating disease prior to the SCI that caused exercise intolerance
- Premorbid, ongoing major depression or psychosis, altered cognitive status
- History of head injury or concussion, skull fractures (or any skull deficit), unexplained headaches in the last 6 months, or stroke
- Metal plate in skull
- History of seizures
- Receiving drugs acting primarily on the central nervous system, which lower the seizure threshold, such as antipsychotic drugs (chlorpromazine, clozapine) or tricyclic antidepressants
- Pregnant females
- Ongoing cord compression, or a syrinx in the spinal cord, or one who suffers from a spinal cord disease such as spinal stenosis, spina bifida, or herniated cervical disk
Where
- Chicago, Illinois
- Hines, Illinois
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jan 16, 2026 · Source of record for eligibility and locations