Interictal ECoG spikes as reflected in MEG

Geertjan Huiskamp*, Zaloa Agirre-Arrizubieta

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

This study investigates the relationship between the sources of MEG interictal spikes and the distribution of spikes in invasive ECoG in a group of 38 epilepsy patients. An amplitude/surface area measure is defined to quantify ECoG spikes. It is found that all MEG spikes are associated with an ECoG spike that is, according to this measure, among the largest in each patient. For different brain regions considered the inter-hemispheric, tempero-lateral and central regions stand out. However, MEG may only see part of the often complex ECoG spike. In an accompanying simulation study it is shown that MEG as predicted from measured complex ECoG spikes resemble measured MEG and show similar shortcomings with respect to localization.

Original languageEnglish
Title of host publication2009 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-20
Place of PublicationNEW YORK
PublisherIEEE
Pages1930-1933
Number of pages4
ISBN (Print)978-1-4244-3295-0
Publication statusPublished - 2009
EventAnnual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society - Minneapolis, Mongolia
Duration: 3 Sept 20096 Sept 2009

Publication series

NameIEEE Engineering in Medicine and Biology Society Conference Proceedings
PublisherIEEE
ISSN (Print)1557-170X

Conference

ConferenceAnnual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society
Country/TerritoryMongolia
Period3/09/096/09/09

Keywords

  • SOURCE LOCALIZATION
  • EPILEPSY
  • IDENTIFICATION
  • EEG

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