Comprehensive World Brain Mapping Course-SEP, MEP Use in Brain Mapping

Video Transcription

Video Summary

In this video, the speaker discusses somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) and their use in brain mapping procedures during surgery. The speaker mentions three classes of interoperative neuromonitoring: electrical stimulation evoked potentials, task-related evoked potentials, and free-running biologic signal recordings. The video highlights some challenges in interoperative monitoring, such as external noise, patient-related issues like muscle atrophy, technical issues with equipment, and the choice of anesthesia. The speaker then focuses on SSEPs and MEPs monitoring in the anesthetized patient. SSEPs are used for precise localization, especially in areas not visually accessible, while MEPs aid in motor mapping. The importance of phase reversal potential is explained, which helps locate the motor cortex. The video also covers techniques for stimulation and monitoring, including considerations for anesthesia and the use of ice-cold saline to inhibit seizures. The speaker emphasizes the need for constant communication between the surgeon and the neurophysiologist during the procedures. The video concludes with a study that correlates monitoring and mapping techniques with postoperative motor deficits, highlighting the importance of using both techniques together.

Asset Subtitle

Jay Lawrence Shils, PhD

Keywords

somatosensory evoked potentials

motor evoked potentials

brain mapping procedures

interoperative neuromonitoring

precise localization

motor mapping