Personalising Vibrotactile Displays through Perceptual Sensitivity Adjustment

Luzhnica, G., Stein, S. , Veas, E., Pammer, V., Williamson, J. and Murray Smith, R. (2017) Personalising Vibrotactile Displays through Perceptual Sensitivity Adjustment. In: 21st International Symposium on Wearable Computers (ISWC 2017), Maui, HI, USA, 11-15 Sept 2017, pp. 66-73. ISBN 9781450351881 (doi:10.1145/3123021.3123029)

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Abstract

Haptic displays are commonly limited to transmitting a discrete set of tactile motives. In this paper, we explore the transmission of real-valued information through vibrotactile displays. We simulate spatial continuity with three perceptual models commonly used to create phantom sensations: the linear, logarithmic and power model. We show that these generic models lead to limited decoding precision, and propose a method for model personalization adjusting to idiosyncratic and spatial variations in perceptual sensitivity. We evaluate this approach using two haptic display layouts: circular, worn around the wrist and the upper arm, and straight, worn along the forearm. Results of a user study measuring continuous value decoding precision show that users were able to decode continuous values with relatively high accuracy (4.4% mean error), circular layouts performed particularly well, and personalisation through sensitivity adjustment increased decoding precision.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Murray-Smith, Professor Roderick and Stein, Dr Sebastian and Williamson, Dr John
Authors: Luzhnica, G., Stein, S., Veas, E., Pammer, V., Williamson, J., and Murray Smith, R.
College/School:College of Science and Engineering > School of Computing Science
ISBN:9781450351881
Copyright Holders:Copyright © 2017 The Authors
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
669801MoreGRASPRoderick Murray-SmithEuropean Commission (EC)N/ACOM - COMPUTING SCIENCE