Analysis of single-trial eeg data using a combined robust pre-whitening technique and ica approach

Liangyu Zhao, Jianting Cao, Tetsuya Hoya, Andrzej Cichocki

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

In electroencephalograph (EEG) experiment, the measure results are usually influenced by different kinds of noise with high power. Treating an averaged event-related potential (ERP) data is a main approach in recent topics of applying independent component analysis (ICA) to EEG signal processing. By taking the average, the signal-noise ratio (SNR) is increased, however, some important information such as the trial-by-trial variation of the amplitude will be lost during the averaging. On the other hand, the analysis of single-trial data will generally be hard in the low SNR. This paper presents a robust pre-whitening technique with ICA approach for the unaveraged single-trial EEG data. Our approach is based upon the two techniques: decorrelation with a high-level additive noise reduction and decomposition of individual source components. The results on the unaveraged visual evoked potential (VEP) single-trial data analysis illustrate that not only the behavior and location but also the activity strength (amplitude) and dynamics of the individual evoked response can be visualized by the proposed method.

Original languageEnglish
Title of host publicationProceedings of the 2005 IEEE International Workshop on VLSI Design and Video Technology, IWVDVT 2005
Pages335-339
Number of pages5
Publication statusPublished - 2005
Externally publishedYes
Event2005 IEEE International Workshop on VLSI Design and Video Technology, IWVDVT 2005 - Suzhou, China
Duration: 28 May 200530 May 2005

Publication series

NameProceedings of the 2005 IEEE International Workshop on VLSI Design and Video Technology, IWVDVT 2005

Conference

Conference2005 IEEE International Workshop on VLSI Design and Video Technology, IWVDVT 2005
Country/TerritoryChina
CitySuzhou
Period28/05/0530/05/05

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