A closed-loop brain computer interface to a virtual reality avatar: Gait adaptation to visual kinematic perturbations

Trieu Phat Luu; Yongtian He; Samuel Brown; Sho Nakagome; Jose L. Contreras-Vidal

doi:10.1109/ICVR.2015.7358598

A closed-loop brain computer interface to a virtual reality avatar: Gait adaptation to visual kinematic perturbations

Trieu Phat Luu, Yongtian He, Samuel Brown, Sho Nakagome, Jose L. Contreras-Vidal

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

27 Scopus citations

Abstract

The control of human bipedal locomotion is of great interest to the field of lower-body brain computer interfaces (BCIs) for rehabilitation of gait. While the feasibility of a closed-loop BCI system for the control of a lower body exoskeleton has been recently shown, multi-day closed-loop neural decoding of human gait in a virtual reality (BCI-VR) environment has yet to be demonstrated. In this study, we propose a real-time closed-loop BCI that decodes lower limb joint angles from scalp electroencephalography (EEC) during treadmill walking to control the walking movements of a virtual avatar. Moreover, virtual kinematic perturbations resulting in asymmetric walking gait patterns of the avatar were also introduced to investigate gait adaptation using the closed-loop BCI-VR system over a period of eight days. Our results demonstrate the feasibility of using a closed-loop BCI to learn to control a walking avatar under normal and altered visuomotor perturbations, which involved cortical adaptations. These findings have implications for the development of BCI-VR systems for gait rehabilitation after stroke and for understanding cortical plasticity induced by a closed-loop BCI system.

Original language	English (US)
Title of host publication	2015 International Conference on Virtual Rehabilitation, ICVR 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	30-37
Number of pages	8
ISBN (Electronic)	9781479989843
DOIs	https://doi.org/10.1109/ICVR.2015.7358598
State	Published - Dec 16 2015
Event	11th Annual International Conference on Virtual Rehabilitation, ICVR 2015 - Valencia, Spain Duration: Jun 9 2015 → Jun 12 2015

Publication series

Name	International Conference on Virtual Rehabilitation, ICVR
ISSN (Electronic)	2331-9569

Other

Other	11th Annual International Conference on Virtual Rehabilitation, ICVR 2015
Country/Territory	Spain
City	Valencia
Period	6/9/15 → 6/12/15

Keywords

Brain machine interface
gait adaptation
virtual environment
visuomotor adaptation

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Networks and Communications

Access to Document

10.1109/ICVR.2015.7358598

Cite this

Luu, T. P., He, Y., Brown, S., Nakagome, S., & Contreras-Vidal, J. L. (2015). A closed-loop brain computer interface to a virtual reality avatar: Gait adaptation to visual kinematic perturbations. In 2015 International Conference on Virtual Rehabilitation, ICVR 2015 (pp. 30-37). Article 7358598 (International Conference on Virtual Rehabilitation, ICVR). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICVR.2015.7358598

A closed-loop brain computer interface to a virtual reality avatar: Gait adaptation to visual kinematic perturbations. / Luu, Trieu Phat; He, Yongtian; Brown, Samuel et al.
2015 International Conference on Virtual Rehabilitation, ICVR 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 30-37 7358598 (International Conference on Virtual Rehabilitation, ICVR).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Luu, TP, He, Y, Brown, S, Nakagome, S & Contreras-Vidal, JL 2015, A closed-loop brain computer interface to a virtual reality avatar: Gait adaptation to visual kinematic perturbations. in 2015 International Conference on Virtual Rehabilitation, ICVR 2015., 7358598, International Conference on Virtual Rehabilitation, ICVR, Institute of Electrical and Electronics Engineers Inc., pp. 30-37, 11th Annual International Conference on Virtual Rehabilitation, ICVR 2015, Valencia, Spain, 6/9/15. https://doi.org/10.1109/ICVR.2015.7358598

Luu TP, He Y, Brown S, Nakagome S, Contreras-Vidal JL. A closed-loop brain computer interface to a virtual reality avatar: Gait adaptation to visual kinematic perturbations. In 2015 International Conference on Virtual Rehabilitation, ICVR 2015. Institute of Electrical and Electronics Engineers Inc. 2015. p. 30-37. 7358598. (International Conference on Virtual Rehabilitation, ICVR). doi: 10.1109/ICVR.2015.7358598

Luu, Trieu Phat ; He, Yongtian ; Brown, Samuel et al. / A closed-loop brain computer interface to a virtual reality avatar : Gait adaptation to visual kinematic perturbations. 2015 International Conference on Virtual Rehabilitation, ICVR 2015. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 30-37 (International Conference on Virtual Rehabilitation, ICVR).

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A closed-loop brain computer interface to a virtual reality avatar: Gait adaptation to visual kinematic perturbations

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Keywords

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