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Updated: Feb 12, 2026
11:57
Synergetic Use of Neural Precursor Cells and Self-assembling Peptides in Experimental Cervical Spinal Cord Injury
Published on: February 23, 2015
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Non-Invasive Activation of Cervical Spinal Networks after Severe Paralysis
Parag Gad1, Sujin Lee2, Nicholas Terrafranca3
11 Department of Integrative Biology and Physiology, University of California , Los Angeles, California.
Journal of Neurotrauma
|April 14, 2018
Summary
This study shows transcutaneous neuromodulation can significantly improve hand grip strength in individuals with cervical spinal cord injury (SCI). This non-invasive method enhances voluntary control, offering new hope for regaining independence.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Biomedical Engineering
Background:
- Cervical spinal cord injury (SCI) severely impacts upper extremity function, limiting independence for tetraplegics.
- Regaining hand function is a primary goal, yet therapeutic advancements for severe cervical SCI remain limited.
- Non-functional sensory-motor networks in the cervical spinal cord may be modifiable to restore hand control.
Purpose of the Study:
- To investigate the efficacy of transcutaneous neuromodulation to restore voluntary hand function in individuals with chronic cervical SCI.
- To determine if non-invasive stimulation can enable and amplify existing voluntary control of the hand.
- To assess improvements in grip strength and potentially other functions below the injury level.
Main Methods:
- Employed transcutaneous enabling motor control (TEMC), a non-invasive neuromodulation technique.
- Subjects underwent eight sessions of TEMC combined with task-specific training over four weeks.
- Stimulation parameters were designed to enable voluntary intent rather than directly induce muscle contractions.
Main Results:
- Significant increases in maximum voluntary hand grip forces were observed (up to ~325% with stimulation, ~225% without).
- Improvements occurred in both hands, irrespective of hand dominance, in chronic SCI subjects (AIS B and C).
- Some participants showed secondary improvements in autonomic function, lower extremity motor function, and sensation.
Conclusions:
- Transcutaneous neuromodulation combined with training shows promise for restoring hand function after severe cervical SCI.
- The method effectively enhances voluntary hand grip strength, suggesting a viable therapeutic approach.
- Further controlled studies are necessary to validate these findings in a broader SCI population.
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