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Evidence that juvenile myoclonic epilepsy is a disorder of frontotemporal corticothalamic networks.

Abstract：

:The purpose of this study is to determine regions of cerebral cortex activated during the onset and propagation of dense array electroencephalographic (dEEG) epileptiform discharges in patients with juvenile myoclonic epilepsy (JME), through the use of 256 channel, dense array scalp EEG recordings. Ten patients (16-58 years old) with the clinical diagnosis of JME comprised the study group. In all cases the MRI and neurological exams were normal, while standard EEG recordings documented typical "generalized" 4-6 Hz epileptiform patterns. Outpatient dEEG recordings captured epileptiform discharges in each patient. Localization of onset and spread of discharges in relation to a standard MRI model was accomplished by applying dipole fits and a distributed linear inverse method of cortically constrained source analysis. All patients showed epileptiform discharges that localized to sources that included orbitofrontal/medial frontopolar cortex, while basal-medial temporal lobe sources were observed in 5/10 subjects. In many ways similar to discharges of typical absence, epileptiform patterns in JME are usually irregular and frequently include temporal lobe structures as the dominant contributors to the discharges. We find that epileptiform discharges in patients with JME are not "generalized" in the sense of bilaterally synchronous diffuse onset. Rather, discharges have both localized onsets and a restricted cortical network during propagation that includes regions of frontal and temporal cortex.

journal_name

Neuroimage

journal_title

NeuroImage

authors

Holmes MD,Quiring J,Tucker DM

doi

10.1016/j.neuroimage.2009.08.004

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

80-93

issue

1

eissn

1053-8119

issn

1095-9572

pii

S1053-8119(09)00865-9

journal_volume

49

pub_type

杂志文章

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