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Goal-recognition-based adaptive brain-computer interface for navigating immersive robotic systems

Abu-Alqumsan, Mohammad; Ebert, Felix; Peer, Angelika

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Authors

Mohammad Abu-Alqumsan

Felix Ebert



Abstract

© 2017 IOP Publishing Ltd. Objective. This work proposes principled strategies for self-adaptations in EEG-based Brain-computer interfaces (BCIs) as a way out of the bandwidth bottleneck resulting from the considerable mismatch between the low-bandwidth interface and the bandwidth-hungry application, and a way to enable fluent and intuitive interaction in embodiment systems. The main focus is laid upon inferring the hidden target goals of users while navigating in a remote environment as a basis for possible adaptations. Approach. To reason about possible user goals, a general user-agnostic Bayesian update rule is devised to be recursively applied upon the arrival of evidences, i.e. user input and user gaze. Experiments were conducted with healthy subjects within robotic embodiment settings to evaluate the proposed method. These experiments varied along three factors: the type of the robot/environment (simulated and physical), the type of the interface (keyboard or BCI), and the way goal recognition (GR) is used to guide a simple shared control (SC) driving scheme. Main results. Our results show that the proposed GR algorithm is able to track and infer the hidden user goals with relatively high precision and recall. Further, the realized SC driving scheme benefits from the output of the GR system and is able to reduce the user effort needed to accomplish the assigned tasks. Despite the fact that the BCI requires higher effort compared to the keyboard conditions, most subjects were able to complete the assigned tasks, and the proposed GR system is additionally shown able to handle the uncertainty in user input during SSVEP-based interaction. The SC application of the belief vector indicates that the benefits of the GR module are more pronounced for BCIs, compared to the keyboard interface. Significance. Being based on intuitive heuristics that model the behavior of the general population during the execution of navigation tasks, the proposed GR method can be used without prior tuning for the individual users. The proposed methods can be easily integrated in devising more advanced SC schemes and/or strategies for automatic BCI self-adaptations.

Citation

Abu-Alqumsan, M., Ebert, F., & Peer, A. (2017). Goal-recognition-based adaptive brain-computer interface for navigating immersive robotic systems. Journal of Neural Engineering, 14(3), https://doi.org/10.1088/1741-2552/aa66e0

Journal Article Type Article
Acceptance Date Mar 15, 2017
Online Publication Date Mar 15, 2017
Publication Date Apr 13, 2017
Deposit Date Mar 27, 2017
Publicly Available Date Mar 29, 2024
Journal Journal of Neural Engineering
Print ISSN 1741-2560
Electronic ISSN 1741-2552
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 14
Issue 3
DOI https://doi.org/10.1088/1741-2552/aa66e0
Keywords adaptive BCI, SSVEP, intention recognition, shared control, robotic embodiment
Public URL https://uwe-repository.worktribe.com/output/886388
Publisher URL https://doi.org/10.1088/1741-2552/aa66e0

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