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Extracting optimal tempo-spatial features using local discriminant bases and common spatial patterns for brain computer interfacing

Asensio-Cubero, Javier, Gan, John Q., Palaniappan, Ramaswamy (2013) Extracting optimal tempo-spatial features using local discriminant bases and common spatial patterns for brain computer interfacing. Biomedical Signal Processing and Control, 8 (6). pp. 772-778. ISSN 1746-8094. (doi:10.1016/j.bspc.2013.07.004) (KAR id:50390)

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Official URL:
http://dx.doi.org/10.1016/j.bspc.2013.07.004

Abstract

Brain computer interfaces (BCI) provide a new approach to human computer communication, where the control is realised via performing mental tasks such as motor imagery (MI). In this study, we investigate a novel method to automatically segment electroencephalographic (EEG) data within a trial and extract features accordingly in order to improve the performance of MI data classification techniques. A new local discriminant bases (LDB) algorithm using common spatial patterns (CSP) projection as transform function is proposed for automatic trial segmentation. CSP is also used for feature extraction following trial segmentation. This new technique also allows to obtain a more accurate picture of the most relevant temporal–spatial points in the EEG during the MI. The results are compared with other standard temporal segmentation techniques such as sliding window and LDB based on the local cosine transform (LCT).

Item Type: Article
DOI/Identification number: 10.1016/j.bspc.2013.07.004
Uncontrolled keywords: Brain computer interface; Motor imagery; Local discriminant bases; Common spatial patterns
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming, > QA76.87 Neural computers, neural networks
Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming, > QA76.9.H85 Human computer interaction
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Computing
Depositing User: Palaniappan Ramaswamy
Date Deposited: 03 Sep 2015 17:16 UTC
Last Modified: 16 Nov 2021 10:21 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50390 (The current URI for this page, for reference purposes)

University of Kent Author Information

Palaniappan, Ramaswamy.

Creator's ORCID: https://orcid.org/0000-0001-5296-8396
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