Enhancing Detection of SSVEPs through Spatial Filtering: An Inter-Trial Distance Minimization Perspective

Zhenyu Wang, Xianfu Chen, Ruxue Li, Honglin Hu, Ting Zhou

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

Abstract

The brain-computer interface (BCI) technology has a great potential in providing more intelligent robots control for future disaster management systems. However, before brain-controlled robots can finally be brought to reality, many practical problems need to be solved. One of them is to further improve the detection performance of existing BCI systems. In steady-state visual-evoked potential (SSVEP) based BCIs, the selection of spatial filters poses a direct impact on the detection accuracy and the information transfer rate that can be achieved. To derive the optimum spatial filters, a popular approach is to maximize the inter-trial correlation over the training set. The relevant algorithms include task-related component analysis (TRCA), correlated component analysis (CORCA), sum of squared correlation analysis (SSCOR), etc. In this paper, a new perspective for calculating the spatial filters is proposed and it is named inter-trial distance minimization analysis (ITDMA). Literally, different from the conventional methods, the proposed ITDMA algorithm derives the spatial filters through minimizing the inter-trial distance over the training set. The detection performance of ITDMA is tested on a public benchmark SSVEP dataset and results show that the proposed ITDMA algorithm outperforms the three benchmark algorithms. The validity of ITDMA is verified.
Original languageEnglish
Title of host publication2021 International Conference on Information and Communication Technologies for Disaster Management (ICT-DM)
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages175-180
ISBN (Electronic)978-1-6654-3285-6
DOIs
Publication statusPublished - 3 Dec 2021
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Information and Communication Technologies for Disaster Management, ICT-DM 2021 - Hangzhou, China
Duration: 3 Dec 20215 Dec 2021

Conference

ConferenceInternational Conference on Information and Communication Technologies for Disaster Management, ICT-DM 2021
Period3/12/215/12/21

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