Spatial sampling of neocortical activity by electrode grids

Author

Hoekema, Rudi ; Huiskamp, Geertjan ; Wieneke, George

Author_Institution

Dept. of Clinical Neurophysiol., Univ. Hosp. Utrecht, Netherlands

Volume

1

fYear

1999

fDate

1999

Abstract

In epilepsy surgery, electrode grids are often used to measure electrocorticograms (ECoGs). In these electrode grids, the distance between contacts is usually 10 mm. This may not be adequate to sample neocortical electrical activity. In this study, ECoGs were simulated, assuming the location of the electrical sources in the brain generating epileptic spikes. It is concluded that for adequately measuring the electric field generated by cortical sources, the contact distance should be decreased to 5 mm

Keywords

biomedical electrodes; electroencephalography; surgery; 10 mm; 5 mm; ECoGs; contact distance; electrocorticograms measurement; electrode grids; epilepsy surgery; epileptic spikes generation; neocortical electrical activity sampling; Conducting materials; Conductors; Contacts; Electric variables measurement; Electrodes; Epilepsy; Hospitals; Neurophysiology; Sampling methods; Surgery;

fLanguage

English

Publisher

ieee

Conference_Titel

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint

Conference_Location

Atlanta, GA

ISSN

1094-687X

Print_ISBN

0-7803-5674-8

Type

conf

DOI

10.1109/IEMBS.1999.802530

Filename

802530