Investigating brief motor imagery for an ERD/ERS based BCI

Author

Thomas, Edward ; Fruitet, J. ; Clerc, Maurice

Author_Institution

INRIA, Sophia Antipolis, France

fYear

2012

fDate

Aug. 28 2012-Sept. 1 2012

Firstpage

2929

Lastpage

2932

Abstract

This study establishes the effectiveness of event related synchronisation (ERS) features for a system paced brain computer interface (BCI). In particular, the relationship between the duration of motor imagery (MI) and the quality of the features extracted from the ERS is investigated. To this end, two groups of users performed brief (2s) or sustained (4s) MI, and offline single trial BCIs were validated on each group based on features extracted from the EEG before, during and after MI. The BCIs were designed to recognise two intentional control tasks and a no-control state. Cross-validated results indicate that brief MI leads to more informative ERS features than sustained MI.

Keywords

biocontrol; brain-computer interfaces; electroencephalography; feature extraction; medical image processing; EEG; ERD/ERS based BCI; ERS features; brain computer interface; brief motor imagery; event related synchronisation; feature extraction; intentional control tasks; offline single trial BCI; Accuracy; Brain computer interfaces; Electroencephalography; Integrated circuits; Spectrogram; Support vector machines; Training; Algorithms; Brain-Computer Interfaces; Electroencephalography; Humans; Imagination;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Conference_Location

San Diego, CA

ISSN

1557-170X

Print_ISBN

978-1-4244-4119-8

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/EMBC.2012.6346577

Filename

6346577