The symposium from which this book originates represents a sig- nificant watershed in the field of intraoperative neural monitoring, since the participants concluded that electrophysiologic monitoring techniques should be considered a "standard of care" for surgical pro- cedures that place the central nervous system (CNS) at risk for injury. Specifically, it was agreed that the somatosensory-evoked potential (SEP) is a remarkably reliable and sensitive...