+ Translate

The magnetic field of epileptic spikes agrees with intracranial localizations in complex partial epilepsy

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

The magnetoencephalogram (MEG) and electroencephalogram (EEG) were measured during interictal epileptic spikes in nine patients with complex partial seizures. The MEG localization estimates were compared with localizations by intraoperative cortical electrodes, subdural electrodes, stereotaxic depth electrodes, anatomic imaging, postoperative pathologic analysis, and postoperative follow-up. In all patients, MEG localization estimates were in the same lobe as the epileptic focus determined by invasive methods and EEG. In two patients, it was possible to quantify precisely the accuracy of MEG localization by mapping a spike focus that was visually indistinguishable on MEG and cortical recordings. In both patients, MEG localization was approximately 12 mm from the center of the cortical spike focus on intracranial recordings. In eight patients, MEG showed tangential dipolar field patterns on the spontaneous record, but EEG did not. In one patient, a cortical epileptic discharge was detected only on MEG for some discharges and only on EEG for other discharges. The MEG did not detect deep spikes with present levels of environmental noise.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006712859

PMID: 3362376

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Wettke, K.; Meyer, W.; Huhn, J. E., 1962: The effect of adding gelatin on sedimentation and maintenance of forward motility in boar spermatozoa stored at +12 degrees C in a skim milk diluent and in a centrifuged egg yolk-citrate diluent.. A further series of small experiments on the preservation of boar semen is briefly described. A total of 36 ejaculates from 4 boars was used. In both diluents the addition of gelatin influenced sedimentation; amounts of 350 mg. per 100 ml. diluent...

White, Scott D.; Padley, W. Douglas, 1997: Coastal sage scrub series of western Riverside County, California. The widely used term "Riversidian sage scrub" distinguishes coastal sage scrub in interior cismontane southern California from stands elsewhere but does not account for the considerable variation among stands within the region. Coastal s...

Nassar, R.; Mosier, J.E., 1982: Feline population dynamics: a study of the Manhattan, Kansas, feline population. Analysis of the age-specific birth and survival rates and the age distribution in the pet population of cats in Manhattan, Kansas, revealed that the rate of population change (lambda) was about 1.18. This means that under present birth and death r...

Whyte, Ian M.; Dawson, Andrew H.; Buckley, Nicholas A.; Carter, Gregory L.; Levey, Catherine M., 1997: A model for the management of self-poisoning. Objective: To describe the development and activity of a multidisciplinary service to manage self-poisoning. Design: Descriptive, comparative study with prospective data collection. Setting: Regional toxicology treatment centre in the Hunter area...

Panah, S. K. A., 2002: A study of surface temperature in Yardang margin of Lut Desert based upon field measurements and landsat satellite thermal data. Lut Desert, as one of the most important and rare features in Iran, has attracted much attention from the view point of its high surface temperature. Due to harsh climatic conditions in the Lut Desert, not much information about air and surface te...

Borradaile, L. A., 1920: On a new com mensal prawn. Annals and Magazine of Natural History Series 9: 5 132-133

Bodeiko, Va; Kintya, Pk, 1975: Steroid saponins. VIII. The structure of agave saponins C and D from the leaves of Agave americana. Chemistry of natural compounds: (Transl 1976), 11 (6) 775-777

Icole Michel, 1979: Paleoclimatologic interpretation of soils in the Sahel region. Bulletin de Liaison - Association Senegalaise pour l'Etude du Quaternaire de l'Ouest Africain 56-57): 84-85

Cooper B. J., 1991: Late Palaeozoic spore/ pollen stratigraphy in Australia. Memoir - Geological Society of India 20: 109-129

Fruit Research Section Division And Plant Diseases Division, 1960: Cherry variegation. Buds from trees showing variegation invariably produce marbled shoots. Variegation symptoms persist throughout the life of the tree. If the variegation is extensive, stunted growth and undersized fruit result.