title: An 8-year experience with depth electrodes in the evaluation of ablative seizure surgery candidates.
abstract: Stereotactically implanted depth electrodes are one means of localization of seizure foci. Unilateral seizure focus localization was obtained in 72.7% mesial temporal (MT) implants and 50% of focus/extramesial temporal (MT-XMT) implants. Recent increase in localization to over 80% in MT implants was possible because a larger percentage of patients had MT-XMT implants. Increased localization to 60% in MT-XMT implants was related to using more XMT electrodes per patient and to orienting electrodes to monitor larger limbic XMT and neocortical areas. Since MT foci were localized in 25% of MT-XMT cases, MT electrodes should be included with all MT-XMT implants. Depth electrography can also be used to rule out certain patients as surgical candidates. Therefore, a surgical decision can be reached in a very high percentage of patients undergoing depth implantation. Surgical results are comparable to those in our overall series.
authors: Division of Neurosurgery, Medical College of Georgia, Augusta.
authors: J R
authors: JR
authors: Smith
authors: H F
authors: HF
authors: Flanigin
authors: D W
authors: DW
authors: King
authors: B B
authors: BB
authors: Gallagher
authors: A M
authors: AM
authors: Murro
authors: G L
authors: GL
authors: Holmes
authors: L R
authors: LR
authors: Campbell
authors: G
authors: G
authors: Lee
authors: J
authors: J
authors: Wheless
mesh_terms: D001931:Brain Mapping / Q000295:instrumentation; D004292:Dominance, Cerebral / Q000502:physiology; D004567:Electrodes, Implanted; D004569:Electroencephalography / Q000295:instrumentation*; D004828:Epilepsies, Partial / Q000503:physiopathology / Q000601:surgery*; D004833:Epilepsy, Temporal Lobe / Q000503:physiopathology / Q000601:surgery*; D005071:Evoked Potentials / Q000502:physiology; D006801:Humans; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D013238:Stereotaxic Techniques / Q000295:instrumentation*; D013702:Temporal Lobe / Q000503:physiopathology / Q000601:surgery