DEVELOPMENT AND ASSESSMENT OF AN AUGMENTED REALITY FEEDBACK SYSTEM FOR PROSTHESIS USERS
DOI:
https://doi.org/10.57922/mec.2499Abstract
Users of upper limb prostheses face a challenge when attempting to grasp fragile objects due to an impairment of naturalistic sensory feedback regarding grip strength. Augmented Reality (AR) has shown promise as a candidate in solving this issue. Here we present the implementation and testing of a novel AR application for the Microsoft HoloLens 2 and test it using an upper limb prosthesis simulator. Our novel AR software application displays a color overlay on top of a user's prosthetic hand that changes based on grip strength. Using a mechanical egg grasp-and-hold task, we compared grasp performance and learning between prosthesis users with and without AR grip force feedback. Using a mixed ANOVA, we observed no statistically significant difference in performance with and without AR feedback (F(1,15) = 0.87, p = 0.37) , though we did see improvement across three blocks of grasp trials (F(2,30) = 6.58, p = 0.004). The AR implementation as presented was not effective which could be explained by limitations of the HoloLens 2, our overlay visualization, a need for more user training, or the simplicity of the task. Emerging AR systems may be better suited to display useful sensory feedback for upper limb prostheses with reduced latency, higher resolution graphics, and improved hand tracking to better localize the visual overlay.
Downloads
Published
2024-08-15
How to Cite
[1]
L. Inglis and D. Blustein, “DEVELOPMENT AND ASSESSMENT OF AN AUGMENTED REALITY FEEDBACK SYSTEM FOR PROSTHESIS USERS”, MEC Symposium, Aug. 2024.
Conference Proceedings Volume
Section
Myo Control and Sensory Feedback Implementations
