Journal Article


Tomas E. Ward
Alan Smeaton
Graham Healy
Zhengwei Wang


Computer Science

spatial filtering event related potentials erps neuroscience cortically coupled computer vision machine learning linear discriminant analysis rapid serial visual presentation rsvp electroencephalography eeg

Spatial filtering pipeline evaluation of cortically coupled computer vision system for rapid serial visual presentation (2019)

Abstract 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.
Collections Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Computing
Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Biological Sciences: Neuroscience
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: INSIGHT Centre for Data Analytics
Ireland -> Dublin City University -> Subject = Computer Science: Machine learning

Full list of authors on original publication

Tomas E. Ward, Alan Smeaton, Graham Healy, Zhengwei Wang

Experts in our system

Tomas Ward
Maynooth University
Total Publications: 189
Alan F. Smeaton
Dublin City University
Total Publications: 492
Graham Healy
Dublin City University
Total Publications: 34
Zhengwei Wang
Dublin City University
Total Publications: 11