Paper Info
Title
Wearable Dual-Frequency Vibrotactile System for Restoring Force and Stiffness Perception.
Abstract
Recently, there has been substantial progress in the mechatronic design and myoelectric control of active prostheses. However, a significant unmet need is the lack of sensory feedback in commercial prostheses for upper-limb amputees. The lack of sensory perception impacts on the control performance and embodiment, determining relatively high rejection rates. Previous research has been conducted to evaluate various non-invasive substitutional sensory channels, mainly to regenerate haptic perception. However, providing sensory channels for stiffness perception has been much less explored. In this short paper, we propose a non-invasive wearable sensory armband, named vibrotactile frequency modulation (V-FM) system. Using the V-FM, we implement a closed-loop myocontrol system with force and stiffness perception. A user study was conducted based on a repetitive two-forced alternative choice discrimination test in six able-bodied participants. The study was designed according to the method of constant stimuli. Results showed that using the V-FM armband, the participants recovered sensation comparable (in terms of difference threshold) to the natural stiffness perception. This demonstrated the potential of the proposed V-FM armband in restoring haptic and stiffness perception non-invasively.
Year
DOI
Venue
2020
10.1109/TOH.2020.2969162
IEEE transactions on haptics
Keywords
Field
DocType
Wearable haptics,vibrotactile frequency modulation,stiffness perception,sensory substitution,closed-loop bio-feedback.
Restoring force,Computer vision,Stiffness,Wearable computer,Computer science,Simulation,Artificial intelligence,Perception
Journal
Volume
Issue
ISSN
13
1
1939-1412
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Timothee Gathmann100.34
Seyed Farokh Atashzar24013.16
Patrick Sagastegui Alva300.34
Dario Farina4915178.69