The Place of Stereotactic Depth Electrode Recording in Epilepsy

Olivier, A.; Gloor, P.; Andermann, Frédérick; Quesney, L. F.

doi:10.1159/000101166

Cited by 10 publications

(5 citation statements)

References 4 publications

(6 reference statements)

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“…In the other 3, bilateral independent foci with clear unilateral predominance were noted. This preliminary evaluation did not localize the site(s) of seizure onset accurately; therefore, intracranial EEG recordings were made with stereotactically implanted depth electrodes (Olivier et al, 1983(Olivier et al, , 1985; in 5 patients in one hemisphere and in 3 bilaterally. In 4, additional epidural electrodes were used.…”

Section: Methodsmentioning

confidence: 99%

Occipitotemporal Epilepsies: Evaluation of Selected Patients Requiring Depth Electrodes Studies and Rationale for Surgical Approaches

et al. 1993

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In 8 patients in whom it was uncertain whether they had occipital or temporal lobe (TL) epilepsy, clinical, scalp EEG, and radiologic features were correlated with the sites of seizure onset as determined by depth EEG. The 8 patients were selected from > 40 with occipital epilepsy because they had (a) an aura considered to be of occipital lobe (OL) origin, (b) an occipital interictal epileptic focus, (c) an OL lesion, or (d) a combination of all of these. Scalp EEG and clinical patterns suggested temporal involvement in all, however. Extracranial EEG recordings were often misleading, showing multilobar interictal epileptic abnormalities, and seizure onset was of poor localizing value and did not clarify the problem sufficiently. Intracranial EEG recordings showed that seizure onset could be ordered along an occipitotemporal gradient. Consistent OL seizure onset was observed in patients who had only elementary visual auras. Those who had inconsistent aura or no aura, suggesting OL origin, had onset of most attacks in the TL. All patients had a seizure spread pattern suggesting early TL involvement. To prevent visual field defect, surgical approaches included temporal resection when temporal seizure origin or spread was demonstrated; although occasionally this produced excellent results, it was of limited benefit in most patients, even when some seizures were proven to originate in TL structures. In patients with malignant epilepsy and in those with an occipital lesion, occipital resection should be considered.

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Section: Methodsmentioning

confidence: 99%

Occipitotemporal Epilepsies: Evaluation of Selected Patients Requiring Depth Electrodes Studies and Rationale for Surgical Approaches

et al. 1993

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“…The International League Against Epilepsy recognizes there are sufficient distinguishing characteristics for MTLE to be considered a distinct syndromic entity [ 11 ]. Although the two categories of TLE frequently share the same limbic semiology [ 11 , 12 , 13 ], in general, MTLE more commonly displays the epigastric, cephalic or experiential aura, loss or awareness, staring, automatisms and posturing that are typical temporal lobe seizure patterns and are the result of a seizure prominently involving the limbic structures [ 14 ]. The imaging finding that defines MTLE is atrophy and sclerosis of the hippocampus, so-called mesial temporal sclerosis (MTS) [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Surgical Considerations of Intractable Mesial Temporal Lobe Epilepsy

Boling

2018

Brain Sciences

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Surgery of temporal lobe epilepsy is the best opportunity for seizure freedom in medically intractable patients. The surgical approach has evolved to recognize the paramount importance of the mesial temporal structures in the majority of patients with temporal lobe epilepsy who have a seizure origin in the mesial temporal structures. For those individuals with medically intractable mesial temporal lobe epilepsy, a selective amygdalohippocampectomy surgery can be done that provides an excellent opportunity for seizure freedom and limits the resection to temporal lobe structures primarily involved in seizure genesis.

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“…Similar information may be obtained with depth electrodes. Several centers 19 use this method, which involves placement of a narrow probe directly into the region of interest. Depth electrodes are helpful in lateralizing seizure foci, and direct hippocampal recording is possible 16 ; however the region that can be recorded is limited.…”

Section: Invasive Monitoringmentioning

confidence: 99%

Surgical Treatment of Pediatric Epilepsy

Ojemann

2002

Seminars in Neurosurgery

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Children with medically refractory epilepsy may benefit from neurosurgical interventions. As in adults, temporal lobectomy in patients with temporal lobe seizure focus gives good rates of long-term seizure freedom. Neocortical foci are more common in children and often require invasive monitoring with different resective surgeries to treat. Hemispherectomy in patients with unilateral epilepsy and hemispheric deficits has a good outcome as well. Corpus callosotomy and vagus nerve stimulation are effective tools to reduce seizure severity and frequency in children who are not candidates for resective surgery.

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The Place of Stereotactic Depth Electrode Recording in Epilepsy

Cited by 10 publications

References 4 publications

Occipitotemporal Epilepsies: Evaluation of Selected Patients Requiring Depth Electrodes Studies and Rationale for Surgical Approaches

Occipitotemporal Epilepsies: Evaluation of Selected Patients Requiring Depth Electrodes Studies and Rationale for Surgical Approaches

Surgical Considerations of Intractable Mesial Temporal Lobe Epilepsy

Surgical Treatment of Pediatric Epilepsy

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