Intraoperative EEG Depth of Anesthesia

Assuming baseline MEP were set 30 minutes after induction with EEG patterns continuous and symmetrical in fast alpha/slow beta, which EEG pattern would cause a 30-50% reduction in MEP amplitudes?

EEG in burst suppression

Continuous EEG

EEG isoelectric

There's no way I can tell you that with any accuracy.