What are the threshold of stimulation parameters for motor evoked potentials (MEPs)?

Updated: Aug 20, 2019
  • Author: Jasvinder Chawla, MD, MBA; Chief Editor: Selim R Benbadis, MD  more...
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This is the level of stimulation that is needed to obtain reliable MEPs over 50 microvolts in about 50% of 5-10 stimulations. Lower thresholds are found for the hand and forearm, lower still for the truncal lower limb and pelvic musculature.

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