{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T14:58:27Z","timestamp":1787497107733,"version":"build-2736575974"},"reference-count":22,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2010,7]]},"abstract":"\n Object<\/jats:title>\n Intracranial monitoring for temporal lobe seizure localization to differentiate neocortical from mesial temporal onset seizures requires both neocortical subdural grids and hippocampal depth electrode implantation. There are 2 basic techniques for hippocampal depth electrode implantation. This first technique uses a stereotactically guided 8-contact depth electrode directed along the long axis of the hippocampus to the amygdala via an occipital bur hole. The second technique involves direct placement of 2 or 3 4-contact depth electrodes perpendicular to the temporal lobe through the middle temporal gyrus and overlying subdural grid. The purpose of this study was to determine whether one technique was superior to the other by examining monitoring success and complications.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n Between 1997 and 2005, 41 patients underwent invasive seizure monitoring with both temporal subdural grids and depth electrodes placed in 2 ways. Patients in Group A underwent the first technique, and patients in Group B underwent the second technique.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n Group A consisted of 26 patients and Group B 15 patients. There were no statistically significant differences between Groups A and B regarding demographics, monitoring duration, seizure localization, or outcome (Engel classification). There was a statistically significant difference at the point in time at which these techniques were used: Group A represented more patients earlier in the series than Group B (p < 0.05). The complication rate attributable to the grids and depth electrodes was 0% in each group. It was more likely that the depth electrodes were placed through the grid if there was a prior resection and the patient was undergoing a new evaluation (p < 0.05). Furthermore, Group A procedures took significantly longer than Group B procedures.<\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n In this patient series, there was no difference in efficacy of monitoring, complications, or outcome between hippocampal depth electrodes placed laterally through temporal grids or using an occipital bur hole stereotactic approach. Placement of the depth electrodes perpendicularly through the grids and middle temporal gyrus is technically more practical because multiple head positions and redraping are unnecessary, resulting in shorter operative times with comparable results.<\/jats:p>\n <\/jats:sec>","DOI":"10.3171\/2009.12.jns091073","type":"journal-article","created":{"date-parts":[[2010,2,19]],"date-time":"2010-02-19T10:03:27Z","timestamp":1266573807000},"page":"32-38","source":"Crossref","is-referenced-by-count":29,"title":["Stereotactic electroencephalography with temporal grid and mesial temporal depth electrode coverage: does technique of depth electrode placement affect outcome?"],"prefix":"10.3171","volume":"113","author":[{"given":"Jamie J.","family":"Van Gompel","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fredric B.","family":"Meyer","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"W. Richard","family":"Marsh","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kendall H.","family":"Lee","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gregory A.","family":"Worrell","sequence":"additional","affiliation":[{"name":"Neurology, Division of Epilepsy and Electroencephalography, Mayo Clinic, Rochester, Minnesota"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-jns091073","series-title":"Epilepsia","first-page":"662","article-title":"Comparison of mesial versus neocortical onset temporal lobe seizures: neurodiagnostic findings and surgical outcome","volume":"36","author":"Burgerman","year":"1995"},{"key":"b2-jns091073","series-title":"Epilepsy Res","first-page":"175","article-title":"Operative strategy in patients with MRI-identified dual 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outcome","volume":"16","author":"Murphy","year":"2002"},{"key":"b16-jns091073","series-title":"J Neurosurg","first-page":"33","article-title":"Surgical treatment for neocortical temporal lobe epilepsy: clinical and surgical aspects and seizure outcome","volume":"94","author":"Schramm","year":"2001"},{"key":"b17-jns091073","series-title":"Neurology","first-page":"2298","article-title":"Resective reoperation for failed epilepsy surgery: seizure outcome in 64 patients","volume":"63","author":"Siegel","year":"2004"},{"key":"b18-jns091073","series-title":"Lancet Neurol","first-page":"525","article-title":"Outcomes of epilepsy surgery in adults and children","volume":"7","author":"Spencer","year":"2008"},{"key":"b19-jns091073","series-title":"J Neurosurg","first-page":"1179","article-title":"Electrocorticography-guided resection of temporal cavernoma: is electrocorticography warranted and does it alter the surgical approach?","volume":"110","author":"Van Gompel","year":"2009"},{"issue":"3","key":"b20-jns091073","series-title":"Neurosurg Focus","first-page":"E23","article-title":"Phase I trial: safety and feasibility of intracranial electroencephalography using hybrid subdural electrodes containing macro- and microelectrode arrays","volume":"25","author":"Van Gompel","year":"2008"},{"key":"b21-jns091073","series-title":"Neurosurgery","first-page":"498","article-title":"Intracranial electroencephalography with subdural grid electrodes: techniques, complications, and outcomes","volume":"63","author":"Van Gompel","year":"2008"},{"key":"b22-jns091073","series-title":"Epilepsia","first-page":"282","article-title":"ILAE Commission Report. Proposal for a new classification of outcome with respect to epileptic seizures following epilepsy surgery","volume":"42","author":"Wieser","year":"2001"}],"container-title":["Journal of Neurosurgery"],"original-title":[],"link":[{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/113\/1\/article-p32.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/113\/1\/article-p32.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/113\/1\/article-p32.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T00:27:22Z","timestamp":1679876842000},"score":1,"resource":{"primary":{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/113\/1\/article-p32.xml"}},"subtitle":["Clinical article"],"short-title":[],"issued":{"date-parts":[[2010,7]]},"references-count":22,"journal-issue":{"issue":"1"},"URL":"https:\/\/doi.org\/10.3171\/2009.12.jns091073","relation":{},"ISSN":["0022-3085","1933-0693"],"issn-type":[{"value":"0022-3085","type":"print"},{"value":"1933-0693","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,7]]}}}