The effect of recording reference on EEG

Phase synchrony and coherence

Sanqing Hu, Squire Matthew Stead, Andrew B. Gardner, Gregory Alan Worrell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

In [1], we developed two methods to automatically identify the contribution of the recording reference signal from multi-channel intracranial Electroencephalography (iEEG) recordings. In this study, we subtract the reference recording contribution to iEEG and obtain corrected iEEG. We then investigate three commonly used iEEG metrics: spectral power, phase synchrony, and magnitude squared coherence (MSC) for common referential iEEG, corrected iEEG and bipolar montage iEEG. We find significant differences among the three iEEG metrics, and are able to determine the contribution from the recording reference to each metric. Generally, reference signals with smaller amplitude yield lower phase synchrony and reference signals with larger amplitude increase phase synchrony. Reference signals with spectral peaks increase coherence. Reference signal with low power may have no significant impact on calculated coherence. Bipolar EEG usually yields small phase synchrony or MSC values and may obscure the actual phase synchrony or MSC values between two local sources.

Original languageEnglish (US)
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Pages1273-1280
Number of pages8
Volume4492 LNCS
EditionPART 2
StatePublished - 2007
Event4th International Symposium on Neural Networks, ISNN 2007 - Nanjing, China
Duration: Jun 3 2007Jun 7 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 2
Volume4492 LNCS
ISSN (Print)03029743
ISSN (Electronic)16113349

Other

Other4th International Symposium on Neural Networks, ISNN 2007
CountryChina
CityNanjing
Period6/3/076/7/07

Fingerprint

Electroencephalography Phase Synchronization
Electroencephalography
Synchrony
Metric
Electroencephalogram
Electrocorticography

ASJC Scopus subject areas

  • Computer Science(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Theoretical Computer Science

Cite this

Hu, S., Stead, S. M., Gardner, A. B., & Worrell, G. A. (2007). The effect of recording reference on EEG: Phase synchrony and coherence. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (PART 2 ed., Vol. 4492 LNCS, pp. 1273-1280). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 4492 LNCS, No. PART 2).

The effect of recording reference on EEG : Phase synchrony and coherence. / Hu, Sanqing; Stead, Squire Matthew; Gardner, Andrew B.; Worrell, Gregory Alan.

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 4492 LNCS PART 2. ed. 2007. p. 1273-1280 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 4492 LNCS, No. PART 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hu, S, Stead, SM, Gardner, AB & Worrell, GA 2007, The effect of recording reference on EEG: Phase synchrony and coherence. in Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). PART 2 edn, vol. 4492 LNCS, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), no. PART 2, vol. 4492 LNCS, pp. 1273-1280, 4th International Symposium on Neural Networks, ISNN 2007, Nanjing, China, 6/3/07.
Hu S, Stead SM, Gardner AB, Worrell GA. The effect of recording reference on EEG: Phase synchrony and coherence. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). PART 2 ed. Vol. 4492 LNCS. 2007. p. 1273-1280. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); PART 2).
Hu, Sanqing ; Stead, Squire Matthew ; Gardner, Andrew B. ; Worrell, Gregory Alan. / The effect of recording reference on EEG : Phase synchrony and coherence. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 4492 LNCS PART 2. ed. 2007. pp. 1273-1280 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); PART 2).
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