Motor Evoked Potentials (MEP)

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Motor evoked potentials (MEP) are signals recorded from muscles following stimulation of motor cortex. The stimulation may be applied to exposed motor cortex, or transcranially through the skull. The stimulator may be magnetic or electrical.

Motor pathways

Stimulation

  1. Direct cortical stimulation
  2. Transcranial electrical stimulation
  3. Transcranial magnetic stimulation
  4. Spinal cord stimulation

Recording Techniques

Wave form

Intraoperative monitoring

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