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Related Experiment Video

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Evoked potentials and disability in multiple sclerosis: A different perspective to a neglected method.

Nefati Kiylioglu1, Ahu Unsal Parlaz1, Utku Ogan Akyildiz1

  • 1Adnan Menderes University, Medical Faculty, Department of Neurology, 09100, Aydin, Turkey.

Clinical Neurology and Neurosurgery
|March 31, 2015
PubMed
Summary

Evoked potentials (EP) show high abnormality rates in multiple sclerosis (MS) and myelopathy. The summed SEP+MEP score effectively correlates with MS disability, suggesting EP

Keywords:
MEPMSMotor evoked potentialMultiple sclerosisSEPSomatosensory evoked potential

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Area of Science:

  • Neuroscience
  • Clinical Neurology
  • Diagnostic Methods

Background:

  • Evoked potentials (EP) assess sensory-motor system integrity.
  • EP are expected to correlate with disability in neurological conditions.
  • The utility of EP in multiple sclerosis (MS) requires further investigation.

Purpose of the Study:

  • To test the assumption that evoked potentials (EP) reflect functional abnormalities and correlate with disability scales in multiple sclerosis (MS).
  • To evaluate the diagnostic performance of EP parameters in distinguishing MS from myelopathy.
  • To explore the potential of EP as a tool for clinical follow-up in MS.

Main Methods:

  • Investigated patients with MS, myelopathy (M), and controls using EP, MS Walking Scale-12, timed 25-foot walk, and EDSS.
  • Converted EP results to ordinal values for correlation analysis.
  • Performed sensitivity and specificity analysis for EP parameters.

Main Results:

  • Total EP scores indicated high abnormality rates in both MS and M groups.
  • The summed SEP+MEP score demonstrated high sensitivity and specificity for MS.
  • This score correlated significantly with MS-related ambulation disability scales, including EDSS.

Conclusions:

  • Utilizing four-extremity EP recordings with expanded parameters and ordinal expression may benefit MS assessment.
  • EP, despite the cross-sectional nature of this study, shows promise for clinical monitoring in MS.
  • Specific EP parameters, like minimum M latency in MEP, offer high specificity.