Magnetoencephalographic analysis of rolandic discharges in benign childhood epilepsy

Annals of Neurology
T MinamiK Ueda

Abstract

We report the detailed analysis of the generator and propagation of rolandic discharges in benign childhood epilepsy with centrotemporal spikes by means of 37-channel magnetoencephalography with neuromagnetic three-dimensional dipole localization. Equivalent current dipoles of prominent negative sharp waves of rolandic discharges appeared as tangential dipoles in the rolandic region, positive poles being situated anteriorly. These equivalent current dipoles showed a relatively limited localization and regular directions compared with other components. Equivalent current dipoles of preceding small positive waves, positive waves following negative sharp waves, and negative slow waves appeared in the vicinity of negative sharp waves. Equivalent current dipoles of rolandic discharges were located around the generator of somatosensory evoked magnetic fields stimulated at the lower lip. These findings suggest that rolandic discharges are generated through basically a mechanism similar to that for the middle-latency components of somatosensory evoked responses.

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Citations

Jul 10, 2003·Pediatric Neurology·Alberto VerrottiGian Luca Romani
Feb 26, 1998·Epilepsy Research·P Van BogaertS Goldman
Sep 12, 2003·Seizure : the Journal of the British Epilepsy Association·Yung-Yang LinRiitta Hari
Feb 3, 2000·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·K HisadaM Fukui
Mar 23, 2000·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·R FerriS A Musumeci
Aug 16, 2002·Epilepsia·Harumi YoshinagaToru Hoshida
Aug 23, 2008·Brain : a Journal of Neurology·Chrysostomos P PanayiotopoulosMichael Koutroumanidis
Sep 13, 2002·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Maeike ZijlmansAlexander C Van Huffelen
Jul 1, 1998·Journal of Neurology, Neurosurgery, and Psychiatry·K ToyodaM Fujishima
Jan 22, 2003·Brain & Development·Shiro ChitokuO Carter Snead
Jul 28, 2004·Brain & Development·Harumi YoshinagaEiji Oka
Oct 5, 2002·Arquivos de neuro-psiquiatria·Nadia I O BragaJoão Antonio M Nobrega
Mar 1, 2006·Epilepsy Research·Yung-Yang LinLow-Tone Ho
Jan 1, 2008·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Ekaterina PataraiaChristoph Baumgartner
Jun 29, 2002·Journal of Child Neurology·Béla Clemens
May 3, 2001·Journal of Child Neurology·H Otsubo, O C Snead
Oct 3, 2003·Clinical EEG (electroencephalography)·Ki-Young JungDong Wook Kim

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