Motor Evoked Potentials

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations


Motor evoked potentials (MEPs) are the electrical signals recorded from the descending motor pathways or from muscles following stimulation of motor pathways within the brain. They are used for intraoperative monitoring (IOM) and neurodiagnostic testing of the motor pathways; the techniques used in these two settings differ somewhat. Muscle responses are particularly affected by anesthesia and neuromuscular blockade, and special stimulation techniques and certain anesthetic regimens are used to optimize MEPs during IOM. This article describes the neurophysiology of MEP generation and the techniques for recording and interpreting MEPs in both the intraoperative and extraoperative setting.

Original languageEnglish (US)
Title of host publicationEncyclopedia of the Neurological Sciences
PublisherElsevier Inc.
Number of pages4
ISBN (Electronic)9780123851574
ISBN (Print)9780123851581
StatePublished - Jan 1 2014


  • Corticospinal tract
  • D-waves
  • Evoked potentials
  • I-waves
  • Intraoperative monitoring
  • M-waves
  • Motor evoked potentials
  • Transcranial electrical stimulation
  • Transcranial magnetic stimulation

ASJC Scopus subject areas

  • Medicine(all)


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