+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The magnetic field of complex partial seizures agrees with intracranial localizations

The magnetic field of complex partial seizures agrees with intracranial localizations

Annals of Neurology 21(6): 548-558

The magnetoencephalogram (MEG) was recorded during 63 complex partial seizures in 4 patients. The MEG showed large biomagnetic signals occurring at the same time as discharges recorded from scalp electroencephalogram (EEG). These MEG signals had the same morphology and frequency as the discharges from the EEG. The location of the seizure focus was verified by depth electrode recordings in 2 patients and by lesions shown on compouted tomographic scan and magnetic resonance imaging in the other 2. In each patient, MEG localization estimates were consistent with the location of the seizure focus shown by other methods. When seizures were recorded repeatedly and mapped with a single-channel magnetometer placed at different scalp locations in a single patient, the MEG localization agreed with the electrographic seizure focus localized from depth electrodes. In the maps, the MEG resolved an ambiguity in the scalp EEG and therefore increased the confidence of localization. MEG recordings of seizures may help localize epileptic foci noninvasively.

Accession: 006712858

Download citation: RISBibTeXText

PMID: 3606043

DOI: 10.1002/ana.410210605

Download PDF Full Text: The magnetic field of complex partial seizures agrees with intracranial localizations

Related references

The magnetic field of epileptic spikes agrees with intracranial localizations in complex partial epilepsy. Neurology 38(5): 778-786, 1988

Anterior mesial temporal benzodiazepine receptor decrease on carbon 11 flumazenil pet agrees with multimodal localization of epileptogenesis in refractory complex partial seizures. Neurology 42(4 SUPPL 3): 297-298, 1992

Magnetic localization of the somatosensory evoked response agrees with scalp eeg and direct cortical recordings in patients with complex partial epilepsy. Neurology 37(3 SUPPL 1): 376-377, 1987

Technology assessment in Canada: comparison of magnetic field strength in the assessment of complex partial seizures. Academic Radiology 3 Suppl 1: S60-S61, 1996

Duration of complex partial seizures: an intracranial EEG study. Epilepsia 49(4): 677-684, 2007

Efficacy of intracranial foramen ovale electrode recording preceding more invasive studies in complex cases of intractable complex partial seizures. Epilepsia 34(SUPPL 6): 26, 1993

Comparable proportions of classes of experiences and intracerebral consequences for surgical stimulation and external application of weak magnetic field patterns: implications for converging effects in complex partial seizures. Epilepsy & Behavior 27(1): 220-224, 2013

Termination patterns of complex partial seizures: An intracranial EEG study. Seizure 32(): 9-15, 2016

Intracranial lipoma of the quadrigeminal region associated with complex partial seizures. Pediatric Radiology 28(9): 729-731, 1998

Regional brain glucose metabolism in patients with complex partial seizures investigated by intracranial EEG. Epilepsy Research 12(2): 121-129, 1992

Combined multichannel autoregressive and time-frequency analysis of intracranial recordings of complex partial seizures. Epilepsia 41(Supplement 7): 203, 2000

Intracranial and spinal metastases from a ganglioglioma with unusual cytogenetic abnormalities in a patient with complex partial seizures. Child's Nervous System 13(10): 550-555, 1997

Magnetic resonance imaging and complex partial seizures. Electroencephalography and Clinical Neurophysiology. Supplement 39: 161-173, 1987

Magnetic resonance imaging in complex partial seizures. Japanese Journal of Psychiatry and Neurology 43(3): 361-367, 1989

Magnetic resonance volumetry in patients with complex partial seizures. Epilepsia 33(SUPPL 3): 49, 1992