Variability in amplitude and stimulation threshold values in motor evoked potential (MEP) monitoring during the resection of brain lesions

摘要

Objective: Criteria for motor evoked potential (MEP) monitoring include the amplitude criterion and threshold criterion. The aim of our study for the amplitude criterion during removal of brain lesions was to determine a suitable stimulus intensity that can reduce the variability in amplitudes. We also assessed the usefulness of the threshold criterion and amplitude criterion by comparing the variability between the two methods as a preliminary study.