Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG

Amir H. Omidvarnia; Ghasem Azemi; Boualem Boashash; John M. O'Toole; Paul Colditz; Sampsa Vanhatalo

doi:10.1007/978-3-642-34481-7_83

Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG

Amir H. Omidvarnia, Ghasem Azemi, Boualem Boashash, John M. O'Toole, Paul Colditz, Sampsa Vanhatalo

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

6 Citations (Scopus)

Abstract

The aim of this study is to develop a time-frequency method and test its applicability to investigating directional cortical connectivity in the newborn brain considering the effect of volume conduction. We modified time-varying partial directed coherence (tv-PDC) based on orthogonalization of the MVAR model coefficients to deal with the effect of mutual independent sources. The novel measure was then tested using a simulated signal with feature dimensions relevant to EEG activity. From the neonatal EEG responses evoked by flash light stimuli (1Hz), we extracted the directional interactions over time within each hemisphere. The results suggest that the method is able to detect directed information flow within a sub-second time scale in nonstationary multichannel signals (such as newborn EEG) and attenuate the problematic effect of volume conduction for multichannel EEG connectivity analysis.

Original language	English
Title of host publication	Neural Information Processing
Subtitle of host publication	19th International Conference, ICONIP2012 Proceedings, Part II
Editors	Tingwen Huang, Zhigang Zeng, Chuandong Li, Chi Sing Leung
Place of Publication	Heidelberg
Publisher	Springer, Springer Nature
Pages	683-691
Number of pages	9
ISBN (Electronic)	9783642344817
ISBN (Print)	9783642344800
DOIs	https://doi.org/10.1007/978-3-642-34481-7_83
Publication status	Published - 2012
Externally published	Yes
Event	International Conference on Neural Information Processing (19th : 2012) - Doha, Qatar, Qatar Duration: 12 Nov 2012 → 15 Nov 2012

Publication series

Name	Lecture Notes in Computer Science
Publisher	Springer
Volume	7664
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Conference

Conference	International Conference on Neural Information Processing (19th : 2012)
Country/Territory	Qatar
City	Doha, Qatar
Period	12/11/12 → 15/11/12

Keywords

Granger Causality
Connectivity Analysis
Volume Conduction
Functional Connectivity Analysis
Direct Transfer Function

Access to Document

10.1007/978-3-642-34481-7_83

Cite this

Omidvarnia, A. H., Azemi, G., Boashash, B., O'Toole, J. M., Colditz, P., & Vanhatalo, S. (2012). Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG. In T. Huang, Z. Zeng, C. Li, & C. Sing Leung (Eds.), Neural Information Processing: 19th International Conference, ICONIP2012 Proceedings, Part II (pp. 683-691). (Lecture Notes in Computer Science; Vol. 7664). Springer, Springer Nature. https://doi.org/10.1007/978-3-642-34481-7_83

Omidvarnia, Amir H. ; Azemi, Ghasem ; Boashash, Boualem et al. / Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG. Neural Information Processing: 19th International Conference, ICONIP2012 Proceedings, Part II. editor / Tingwen Huang ; Zhigang Zeng ; Chuandong Li ; Chi Sing Leung. Heidelberg : Springer, Springer Nature, 2012. pp. 683-691 (Lecture Notes in Computer Science).

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title = "Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG",

abstract = "The aim of this study is to develop a time-frequency method and test its applicability to investigating directional cortical connectivity in the newborn brain considering the effect of volume conduction. We modified time-varying partial directed coherence (tv-PDC) based on orthogonalization of the MVAR model coefficients to deal with the effect of mutual independent sources. The novel measure was then tested using a simulated signal with feature dimensions relevant to EEG activity. From the neonatal EEG responses evoked by flash light stimuli (1Hz), we extracted the directional interactions over time within each hemisphere. The results suggest that the method is able to detect directed information flow within a sub-second time scale in nonstationary multichannel signals (such as newborn EEG) and attenuate the problematic effect of volume conduction for multichannel EEG connectivity analysis.",

keywords = "Granger Causality, Connectivity Analysis, Volume Conduction, Functional Connectivity Analysis, Direct Transfer Function",

author = "Omidvarnia, {Amir H.} and Ghasem Azemi and Boualem Boashash and O'Toole, {John M.} and Paul Colditz and Sampsa Vanhatalo",

year = "2012",

doi = "10.1007/978-3-642-34481-7_83",

language = "English",

isbn = "9783642344800",

series = "Lecture Notes in Computer Science",

publisher = "Springer, Springer Nature",

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editor = "Tingwen Huang and Zhigang Zeng and Chuandong Li and {Sing Leung}, Chi",

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Omidvarnia, AH, Azemi, G, Boashash, B, O'Toole, JM, Colditz, P & Vanhatalo, S 2012, Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG. in T Huang, Z Zeng, C Li & C Sing Leung (eds), Neural Information Processing: 19th International Conference, ICONIP2012 Proceedings, Part II. Lecture Notes in Computer Science, vol. 7664, Springer, Springer Nature, Heidelberg, pp. 683-691, International Conference on Neural Information Processing (19th : 2012), Doha, Qatar, Qatar, 12/11/12. https://doi.org/10.1007/978-3-642-34481-7_83

Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG. / Omidvarnia, Amir H.; Azemi, Ghasem; Boashash, Boualem et al.
Neural Information Processing: 19th International Conference, ICONIP2012 Proceedings, Part II. ed. / Tingwen Huang; Zhigang Zeng; Chuandong Li; Chi Sing Leung. Heidelberg: Springer, Springer Nature, 2012. p. 683-691 (Lecture Notes in Computer Science; Vol. 7664).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AU - Omidvarnia, Amir H.

AU - Azemi, Ghasem

AU - Boashash, Boualem

AU - O'Toole, John M.

AU - Colditz, Paul

AU - Vanhatalo, Sampsa

PY - 2012

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N2 - The aim of this study is to develop a time-frequency method and test its applicability to investigating directional cortical connectivity in the newborn brain considering the effect of volume conduction. We modified time-varying partial directed coherence (tv-PDC) based on orthogonalization of the MVAR model coefficients to deal with the effect of mutual independent sources. The novel measure was then tested using a simulated signal with feature dimensions relevant to EEG activity. From the neonatal EEG responses evoked by flash light stimuli (1Hz), we extracted the directional interactions over time within each hemisphere. The results suggest that the method is able to detect directed information flow within a sub-second time scale in nonstationary multichannel signals (such as newborn EEG) and attenuate the problematic effect of volume conduction for multichannel EEG connectivity analysis.

AB - The aim of this study is to develop a time-frequency method and test its applicability to investigating directional cortical connectivity in the newborn brain considering the effect of volume conduction. We modified time-varying partial directed coherence (tv-PDC) based on orthogonalization of the MVAR model coefficients to deal with the effect of mutual independent sources. The novel measure was then tested using a simulated signal with feature dimensions relevant to EEG activity. From the neonatal EEG responses evoked by flash light stimuli (1Hz), we extracted the directional interactions over time within each hemisphere. The results suggest that the method is able to detect directed information flow within a sub-second time scale in nonstationary multichannel signals (such as newborn EEG) and attenuate the problematic effect of volume conduction for multichannel EEG connectivity analysis.

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Omidvarnia AH, Azemi G, Boashash B, O'Toole JM, Colditz P, Vanhatalo S. Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG. In Huang T, Zeng Z, Li C, Sing Leung C, editors, Neural Information Processing: 19th International Conference, ICONIP2012 Proceedings, Part II. Heidelberg: Springer, Springer Nature. 2012. p. 683-691. (Lecture Notes in Computer Science). doi: 10.1007/978-3-642-34481-7_83

Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG

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