Title
Evaluating Angular Accuracy of Wrist-based Haptic Directional Guidance for Hand Movement.
Abstract
Haptic guidance for the hand can offer an alternative to visual or audio feedback when those information channels are overloaded or inaccessible due to environmental factors, vision impairments, or hearing loss. We report on a controlled lab experiment to evaluate the impact of directional wrist-based vibro-motor feedback on hand movement, comparing lower-fidelity (4-motor) and higher-fidelity (8-motor) wristbands. Twenty blindfolded participants completed a series of trials, which consisted of interpreting a haptic stimulus and executing a 2D directional movement on a touchscreen. We compare the two conditions in terms of movement error and trial speed, but also analyze the impact of specific directions on performance. Our results show that doubling the number of haptic motors reduces directional movement error but not to the extent expected. We also empirically derive an apparent lower bound in accuracy of ~25° in interpreting and executing on the directional haptic signal.
Year
DOI
Venue
2016
10.20380/GI2016.25
Graphics Interface
Field
DocType
Citations 
Computer vision,Wrist,Upper and lower bounds,Wearable computer,Simulation,Computer science,Touchscreen,Communication channel,Audio feedback,Artificial intelligence,Haptic technology
Conference
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Jonggi Hong1414.24
Lee Stearns2164.26
Jon Froehlich32516207.07
D. A. Ross441.44
Leah Findlater51668101.05