Arvaneh, M., Ward, T.E. and Robertson, I. (2015) Effects of Feedback latency on P300-based Brain-computer Interface. In: 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). 37th International Conf. of the IEEE Engineering in Medicine and Biology Society (EMBC), 25-29 Aug 2015, Milan, Italy. IEEE
Abstract
Feedback has been shown to affect performance when using a Brain-Computer Interface (BCI) based on sensorimotor rhythms. In contrast, little is known about the influence of feedback on P300-based BCIs. There is still an open question whether feedback affects the regulation of P300 and consequently the operation of P300-based BCIs. In this paper, for the first time, the influence of feedback on the P300-based BCI speller task is systematically assessed. For this purpose, 24 healthy participants performed the classic P300-based BCI speller task, while only half of them received feedback. Importantly, the number of flashes per letter was reduced on a regular basis in order to increase the frequency of providing feedback. Experimental results showed that feedback could significantly improve the P300-based BCI speller performance, if it was provided in short time intervals (e.g. in sequences as short as 4 to 6 flashes per row/column). Moreover, our offline analysis showed that providing feedback remarkably enhanced the relevant ERP patterns and attenuated the irrelevant ERP patterns, such that the discrimination between target and non-target EEG trials increased.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 IEEE. This is an author produced version of a paper subsequently published in 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 02 Jun 2016 09:40 |
Last Modified: | 25 Mar 2018 00:51 |
Published Version: | http://dx.doi.org/10.1109/EMBC.2015.7318856 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/EMBC.2015.7318856 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:97431 |