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Spatial filtering pipeline evaluation of cortically coupled computer vision system for rapid serial visual presentation
Wang, Zhengwei; Healy, Graham; Smeaton, Alan F.; Ward, Tomás E.
Rapid Serial Visual Presentation (RSVP) is a paradigm that supports the application of cortically coupled computer vision to rapid image search. In RSVP, images are presented to participants in a rapid serial sequence which can evoke Event-related Potentials (ERPs) detectable in their Electroencephalogram (EEG). The contemporary approach to this problem involves supervised spatial filtering techniques which are applied for the purposes of enhancing the discriminative information in the EEG data. In this paper we make two primary contributions to that field: 1) We propose a novel spatial filtering method which we call the Multiple Time Window LDA Beamformer (MTWLB) method; 2) we provide a comprehensive comparison of nine spatial filtering pipelines using three spatial filtering schemes namely, MTWLB, xDAWN, Common Spatial Pattern (CSP) and three linear classification methods Linear Discriminant Analysis (LDA), Bayesian Linear Regression (BLR) and Logistic Regression (LR). Three pipelines without spatial filtering are used as baseline comparison. The Area Under Curve (AUC) is used as an evaluation metric in this paper. The results reveal that MTWLB and xDAWN spatial filtering techniques enhance the classification performance of the pipeline but CSP does not. The results also support the conclusion that LR can be effective for RSVP based BCI if discriminative features are available.
Keyword(s): Neuroscience; Machine learning; Rapid serial visual presentation (RSVP); cortically coupled computer vision; electroencephalography (EEG); event-related potentials (ERPs); spatial filtering
Publication Date:
Type: Other
Peer-Reviewed: Unknown
Language(s): English
Institution: Dublin City University
Citation(s): Wang, Zhengwei ORCID: 0000-0001-7706-553X <>, Healy, Graham ORCID: 0000-0001-6429-6339 <>, Smeaton, Alan F. ORCID: 0000-0003-1028-8389 <> and Ward, Tomás E. ORCID: 0000-0002-6173-6607 <> (2019) Spatial filtering pipeline evaluation of cortically coupled computer vision system for rapid serial visual presentation. Brain-Computer Interfaces, 6 (4). pp. 132-145. ISSN 2326-263X
Publisher(s): Taylor & Francis Online
File Format(s): application/pdf
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First Indexed: 2019-02-16 06:13:37 Last Updated: 2019-11-12 06:08:53