title: Adaptive-projection intrinsically transformed multivariate empirical mode decomposition in cooperative brain-computer interface applications.
abstract: An extension to multivariate empirical mode decomposition (MEMD), termed adaptive-projection intrinsically transformed MEMD (APIT-MEMD), is proposed to cater for power imbalances and inter-channel correlations in real-world multichannel data. It is shown that the APIT-MEMD exhibits similar or better performance than MEMD for a large number of projection vectors, whereas it outperforms MEMD for the critical case of a small number of projection vectors within the sifting algorithm. We also employ the noise-assisted APIT-MEMD within our proposed intrinsic multiscale analysis framework and illustrate the advantages of such an approach in notoriously noise-dominated cooperative brain-computer interface (BCI) based on the steady-state visual evoked potentials and the P300 responses. Finally, we show that for a joint cognitive BCI task, the proposed intrinsic multiscale analysis framework improves system performance in terms of the information transfer rate.
authors.affiliation: Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, UK.
authors.forename: Apit
authors.initials: A
authors.lastname: Hemakom
authors.affiliation: Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, UK.
authors.forename: Valentin
authors.initials: V
authors.lastname: Goverdovsky
authors.affiliation: Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, UK.
authors.forename: David
authors.initials: D
authors.lastname: Looney
authors.affiliation: Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, UK d.mandic@imperial.ac.uk.
authors.forename: Danilo P
authors.initials: DP
authors.lastname: Mandic
mesh_terms: D000465:Algorithms; D001698:Biomedical Engineering; D062207:Brain-Computer Interfaces; D004569:Electroencephalography; D006801:Humans; D012815:Signal Processing, Computer-Assisted
keywords: adaptive projection; brain–computer interface; intrinsic multiscale analysis; multivariate empirical mode decomposition