Intraoperative monitoring to preserve central visual fields during occipital corticectomy for epilepsy

doi:10.1054/jocn.1999.0208

Journal of Clinical Neuroscience

Volume 7, Issue 3, May 2000, Pages 234-237

https://doi.org/10.1054/jocn.1999.0208 Get rights and content

Abstract

Photic driving using a flashing strobe light was recorded via intracranial electrodes in two patients with occipital epilepsy being evaluated for surgery. The same technique was used to monitor the visual cortex intraoperatively. Visual evoked potentials (VEPs) were also obtained using the intracranial electrodes in one patient. Preoperative photic driving occurred in a separate location from the cortical areas producing ictal epileptiform activity. VEPs were located in the same site as photic driving. Photic driving was monitored throughout the resection and remained unaffected at the end of each procedure. Postoperative visual field testing in both patients showed preservation of central vision although some reduction in peripheral fields was seen. Intraoperative monitoring of the visual cortex using photic stimulation proved to be a reliable technique for preserving central vision during occipital lobe surgery.

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Clinical studyIntraoperative monitoring to preserve central visual fields during occipital corticectomy for epilepsy

Abstract

Epilepsy Surgery

Electroencephalography and Clinical Neurophysiology

Electroencephalography and Clinical Neurophysiology

Electroencephalography and Clinical Neurophysiology

Electroencephalography and Clinical Neurophysiology

Parietal and occipital lobe epilepsy: A review

Epilepsia

Functional MR and PET imaging of rolandic and visual cortices for neurosurgical planning

J Neurosurgery

Functional evaluation using magnetic resonance imaging of the visual cortex in patients with retinochiasmatic lesions

J Neurosurgery

Future directions for functional mapping

Epilepsia

Clinical study
Intraoperative monitoring to preserve central visual fields during occipital corticectomy for epilepsy