Projekter pr. år
Abstract
An assistive robotic manipulator (ARM) can provide independence and improve the quality of life for patients suffering from tetraplegia. However, to properly control such device to a satisfactory level without any motor functions requires a very high performing brain-computer interface (BCI). Steady-state visual evoked potentials (SSVEP) based BCI are among the best performing. Thus, this study investigates the design of a system for a full workspace control of a 7 degrees of freedom ARM. A SSVEP signal is elicited by observing a visual stimulus flickering at a specific frequency and phase. This study investigates the best combination of unique frequencies and phases to provide a 16-target BCI by testing three different systems offline. Furthermore, a fourth system is developed to investigate the impact of the stimulating monitor refresh rate. Experiments conducted on two subjects suggest that a 16-target BCI created by four unique frequencies and 16-unique phases provide the best performance. Subject 1 reaches a maximum estimated ITR of 235 bits/min while subject 2 reaches 140 bits/min. The findings suggest that the optimal SSVEP stimuli to generate 16 targets are a low number of frequencies and a high number of unique phases. Moreover, the findings do not suggest any need for considering the monitor refresh rate if stimuli are modulated using a sinusoidal signal sampled at the refresh rate.
Originalsprog | Engelsk |
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Titel | 2019 IEEE 16th International Conference on Rehabilitation Robotics, ICORR 2019 |
Antal sider | 6 |
Forlag | IEEE |
Publikationsdato | jul. 2019 |
Sider | 1067-1072 |
Artikelnummer | 8779376 |
Kapitel | 8779376 |
ISBN (Trykt) | 978-1-7281-2756-9 |
ISBN (Elektronisk) | 978-1-7281-2755-2 |
DOI | |
Status | Udgivet - jul. 2019 |
Begivenhed | International Conference on Rehabilitation Robotics 2019 (ICORR 2019) - Toronto, Canada Varighed: 24 jun. 2019 → 28 jun. 2019 |
Konference
Konference | International Conference on Rehabilitation Robotics 2019 (ICORR 2019) |
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Land/Område | Canada |
By | Toronto |
Periode | 24/06/2019 → 28/06/2019 |
Navn | I E E E International Conference on Rehabilitation Robotics. Proceedings |
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ISSN | 1945-7898 |
Fingeraftryk
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Struijk, L. N. S. A., Gaihede, M., Bai, S., Kanstrup, A. M., Moeslund, T. B., Bak, T., Kasch, H., Mohammadi, M., Kobbelgaard, F. V., Bengtson, S. H., Gull, M. A. & Thøgersen, M.
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Projekter: Projekt › Forskning