Evaluation of the modified S-transform for time-frequency synchrony analysis and source localisation

Assous, Said and Boashash, Boualem (2012) Evaluation of the modified S-transform for time-frequency synchrony analysis and source localisation. Eurasip Journal On Advances in Signal Processing, 2012 1: 49.1-49.18. doi:10.1186/1687-6180-2012-49


Author Assous, Said
Boashash, Boualem
Title Evaluation of the modified S-transform for time-frequency synchrony analysis and source localisation
Formatted title
Evaluation of the modified S-transform for time-frequency synchrony analysis and source localisation
Journal name Eurasip Journal On Advances in Signal Processing   Check publisher's open access policy
ISSN 1687-6180
1687-6172
Publication date 2012-02
Sub-type Article (original research)
DOI 10.1186/1687-6180-2012-49
Open Access Status DOI
Volume 2012
Issue 1
Start page 49.1
End page 49.18
Total pages 18
Place of publication Heidelberg, Germany
Publisher SpringerOpen
Collection year 2013
Language eng
Abstract This article considers the problem of phase synchrony and coherence analysis using a modified version of the S-transform, referred to here as the Modified S-transform (MST). This is a novel and important time-frequency approach to study the phase coupling between two or more different spatially recorded entities with non-stationary characteristics. The basic method includes a cross-spectral analysis to study the phase synchrony of non-stationary signals, and relies on some properties of the MST, such as phase preservation. We demonstrate the usefulness of the technique using simulated examples and real newborn EEG data. The results show the advantage of using the cross-MST in the study of the connectivity between different signals using the time-frequency coherence. The MST led to improvements in resolution of almost twofold over the standard S-Transform in the examples presented in the article.
Keyword Time-frequency coherence
Cross time-frequency
Modified S-transform
Phase synchrony
Array processing
EEG signal
Time-frequency signal analysis
Quadratic Time-Frequency Distributions
Instantaneous frequency
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article Number: 49

Document type: Journal Article
Sub-type: Article (original research)
Collections: UQ Centre for Clinical Research Publications
Official 2013 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 22 times in Scopus Article | Citations
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