title: Microelectrode recording and macrostimulation in thalamic and subthalamic MRI guided stereotactic surgery.
abstract: Stereotactic neurosurgery aims at placing therapeutic lesions or chronic stimulating electrodes at very precise locations within the brain. Microelectrode recording and macrostimulation are used in addition to anatomoradiological techniques to optimize targeting. Recently, the usefulness of electrophysiological procedures has been questioned. Based on more than 500 therapeutic stereotactic lesions in the last 10 years at the thalamic and subthalamic levels, we evaluate here retrospectively the utility of the two electrophysiological procedures. In two of the three stereotactic targets considered in this study, intraoperative electrophysiological confirmation is mandatory because of the target size with respect to interindividual anatomical variations and of the more or less close vicinity of eloquent structures.
authors.affiliation: IFR 19, EA 1880, Sleep Disorders Unit, Neurological Hospital, 59, boulevard Pinel, 69003 Lyon, France.
authors.forename: M
authors.initials: M
authors.lastname: Magnin
authors.forename: U
authors.initials: U
authors.lastname: Jetzer
authors.forename: A
authors.initials: A
authors.lastname: Morel
authors.forename: D
authors.initials: D
authors.lastname: Jeanmonod
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002531:Cerebellum / Q000601:surgery; D004558:Electric Stimulation; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008839:Microelectrodes; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000295:instrumentation*; D012189:Retrospective Studies; D013238:Stereotaxic Techniques / Q000295:instrumentation*; D020530:Subthalamus / Q000601:surgery*; D013788:Thalamus / Q000601:surgery*