Single tap identification for fast BCI control

Daly, I., Nasuto, S. J. ORCID: https://orcid.org/0000-0001-9414-9049 and Warwick, K. (2011) Single tap identification for fast BCI control. Cognitive Neurodynamics, 5 (1). pp. 21-30. ISSN 1871-4099 doi: 10.1007/s11571-010-9133-x

Abstract/Summary

One of the major aims of BCI research is devoted to achieving faster and more efficient control of external devices. The identification of individual tap events in a motor imagery BCI is therefore a desirable goal. EEG is recorded from subjects performing and imagining finger taps with their left and right hands. A Differential Evolution based feature selection wrapper is used in order to identify optimal features in the spatial and frequency domains for tap identification. Channel-frequency band combinations are found which allow differentiation of tap vs. no-tap control conditions for executed and imagined taps. Left vs. right hand taps may also be differentiated with features found in this manner. A sliding time window is then used to accurately identify individual taps in the executed tap and imagined tap conditions. Highly statistically significant classification accuracies are achieved with time windows of 0.5 s and more allowing taps to be identified on a single trial basis.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/17003
Item Type	Article
Refereed	Yes
Divisions	Life Sciences > School of Biological Sciences > Department of Bio-Engineering
Uncontrolled Keywords	BCI; DE; feature selection; finger tapping; single trial
Publisher	Springer
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