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Does galvanic vestibular stimulation decrease spasticity in clinically complete spinal cord injury?

Radoje D Čobeljić1, Ksenija Ribarič-Jankes2, Antonina Aleksić3

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International Journal of Rehabilitation Research. Internationale Zeitschrift Fur Rehabilitationsforschung. Revue Internationale De Recherches De Readaptation
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Galvanic vestibular stimulation showed no significant overall effect on spasticity in spinal cord injury (SCI) patients. However, some individuals experienced reduced spasticity, suggesting potential benefits for specific SCI populations.

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Area of Science:

  • Neuroscience
  • Rehabilitation Medicine
  • Clinical Trials

Background:

  • Spasticity is a common challenge following complete spinal cord injury (SCI).
  • Current treatments for SCI spasticity have limitations.
  • Vestibulospinal pathways may offer a novel therapeutic target.

Purpose of the Study:

  • To investigate the effects of galvanic vestibular stimulation (GVS) on lower limb spasticity in complete SCI.
  • To compare real GVS with sham stimulation in SCI patients.

Main Methods:

  • Seven patients with complete SCI (ASIA Impairment Scale A) participated.
  • Spasticity was assessed using the Modified Ashworth Scale and pendulum test.
  • Real and sham GVS (15s) were administered, with assessments at baseline, immediately, and 5, 30 min post-stimulation.

Main Results:

  • No significant overall difference in spasticity reduction between real and sham GVS.
  • Two out of seven patients showed reduced spasticity on both measures.
  • Individual variability in response to GVS was observed.

Conclusions:

  • GVS may modulate spasticity in a subset of complete SCI patients.
  • Residual vestibulospinal influences are a potential mechanism.
  • Further research is needed to identify responders and optimize GVS parameters.