Correlation between intra- and extracranial background EEG

Jonas Duun-Henriksen; Troels Wesenberg Kjaer; Rasmus Elsborg Madsen; Line S. Remvig; Carsten Eckhart Thomsen; Helge Bjarup Dissing Sørensen

Correlation between intra- and extracranial background EEG

Jonas Duun-Henriksen, Troels Wesenberg Kjaer, Rasmus Elsborg Madsen, Line S. Remvig, Carsten Eckhart Thomsen, Helge Bjarup Dissing Sørensen

Section 02 - Paediatric Dentistry

1 Citation (Scopus)

Abstract

Scalp EEG is the most widely used modality to record the electrical signals of the brain. It is well known that the volume conduction of these brain waves through the brain, cerebrospinal fluid, skull and scalp reduces the spatial resolution and the signal amplitude. So far the volume conduction has primarily been investigated by realistic head models or interictal spike analysis. We have set up a novel and more realistic experiment that made it possible to compare the information in the intra- and extracranial EEG. We found that intracranial EEG channels contained correlated patterns when placed less than 30 mm apart, that intra- and extracranial channels were partly correlated when placed less than 40 mm apart, and that extracranial channels probably were correlated over larger distances. The underlying cortical area that influences the extracranial EEG is found to be up to 45 cm2. This area is larger than previously reported.

Original language	English
Journal	I E E E Engineering in Medicine and Biology Society. Conference Proceedings
Volume	2012
Pages (from-to)	5198-5201
Number of pages	4
ISSN	2375-7477
Publication status	Published - 2012

Cite this

@article{7a2a59e4bb3b4f06a2c4293e4dd5aa38,

title = "Correlation between intra- and extracranial background EEG",

abstract = "Scalp EEG is the most widely used modality to record the electrical signals of the brain. It is well known that the volume conduction of these brain waves through the brain, cerebrospinal fluid, skull and scalp reduces the spatial resolution and the signal amplitude. So far the volume conduction has primarily been investigated by realistic head models or interictal spike analysis. We have set up a novel and more realistic experiment that made it possible to compare the information in the intra- and extracranial EEG. We found that intracranial EEG channels contained correlated patterns when placed less than 30 mm apart, that intra- and extracranial channels were partly correlated when placed less than 40 mm apart, and that extracranial channels probably were correlated over larger distances. The underlying cortical area that influences the extracranial EEG is found to be up to 45 cm2. This area is larger than previously reported.",

author = "Jonas Duun-Henriksen and Kjaer, {Troels Wesenberg} and Madsen, {Rasmus Elsborg} and Remvig, {Line S.} and Thomsen, {Carsten Eckhart} and S{\o}rensen, {Helge Bjarup Dissing}",

year = "2012",

language = "English",

volume = "2012",

pages = "5198--5201",

journal = "I E E E Engineering in Medicine and Biology Society. Conference Proceedings",

issn = "2375-7477",

publisher = "IEEE Signal Processing Society",

}

TY - JOUR

T1 - Correlation between intra- and extracranial background EEG

AU - Duun-Henriksen, Jonas

AU - Kjaer, Troels Wesenberg

AU - Madsen, Rasmus Elsborg

AU - Remvig, Line S.

AU - Thomsen, Carsten Eckhart

AU - Sørensen, Helge Bjarup Dissing

PY - 2012

Y1 - 2012

N2 - Scalp EEG is the most widely used modality to record the electrical signals of the brain. It is well known that the volume conduction of these brain waves through the brain, cerebrospinal fluid, skull and scalp reduces the spatial resolution and the signal amplitude. So far the volume conduction has primarily been investigated by realistic head models or interictal spike analysis. We have set up a novel and more realistic experiment that made it possible to compare the information in the intra- and extracranial EEG. We found that intracranial EEG channels contained correlated patterns when placed less than 30 mm apart, that intra- and extracranial channels were partly correlated when placed less than 40 mm apart, and that extracranial channels probably were correlated over larger distances. The underlying cortical area that influences the extracranial EEG is found to be up to 45 cm2. This area is larger than previously reported.

AB - Scalp EEG is the most widely used modality to record the electrical signals of the brain. It is well known that the volume conduction of these brain waves through the brain, cerebrospinal fluid, skull and scalp reduces the spatial resolution and the signal amplitude. So far the volume conduction has primarily been investigated by realistic head models or interictal spike analysis. We have set up a novel and more realistic experiment that made it possible to compare the information in the intra- and extracranial EEG. We found that intracranial EEG channels contained correlated patterns when placed less than 30 mm apart, that intra- and extracranial channels were partly correlated when placed less than 40 mm apart, and that extracranial channels probably were correlated over larger distances. The underlying cortical area that influences the extracranial EEG is found to be up to 45 cm2. This area is larger than previously reported.

M3 - Journal article

SN - 2375-7477

VL - 2012

SP - 5198

EP - 5201

JO - I E E E Engineering in Medicine and Biology Society. Conference Proceedings

JF - I E E E Engineering in Medicine and Biology Society. Conference Proceedings

ER -