Online asynchronous decoding of error-related potentials during the continuous control of a robot

Error-related potentials (ErrPs) are the neural signature of error processing. Therefore, the detection of ErrPs is an intuitive approach to improve the performance of brain-computer interfaces (BCIs). The incorporation of ErrPs in discrete BCIs is well established but the study of asynchronous dete...

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Bibliographic Details
Published in:Scientific reports 2019-11, Vol.9 (1), p.17596-9, Article 17596
Main Authors: Lopes-Dias, Catarina, Sburlea, Andreea I., Müller-Putz, Gernot R.
Format: Article
Language:English
Subjects:
631/378/2649/2150
639/166/985
Arm
EEG
Electrodes
Electroencephalography
Experiments
Humanities and Social Sciences
Information processing
Interfaces
Internet
multidisciplinary
Robotics
Robots
Science
Science (multidisciplinary)
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Summary:Error-related potentials (ErrPs) are the neural signature of error processing. Therefore, the detection of ErrPs is an intuitive approach to improve the performance of brain-computer interfaces (BCIs). The incorporation of ErrPs in discrete BCIs is well established but the study of asynchronous detection of ErrPs is still in its early stages. Here we show the feasibility of asynchronously decoding ErrPs in an online scenario. For that, we measured EEG in 15 participants while they controlled a robotic arm towards a target using their right hand. In 30% of the trials, the control of the robotic arm was halted at an unexpected moment (error onset) in order to trigger error-related potentials. When an ErrP was detected after the error onset, participants regained the control of the robot and could finish the trial. Regarding the asynchronous classification in the online scenario, we obtained an average true positive rate (TPR) of 70% and an average true negative rate (TNR) of 86.8%. These results indicate that the online asynchronous decoding of ErrPs was, on average, reliable, showing the feasibility of the asynchronous decoding of ErrPs in an online scenario.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-54109-x