journal article·2021-09-21Open access

Improving the Discriminability of Haptic Icons: The Haptic Tuning Fork

Laura Raya, Sara A. Boga, Marcos Garcia-Lorenzo, Sofia Bayona

Applied Sciences· Volume 11· Issue 18

Abstract

Technological advances enable the capture and management of complex data sets that need to be correctly understood. Visualisation techniques can help in complex data analysis and exploration, but sometimes the visual channel is not enough, or it is not always available. Some authors propose using the haptic channel to reinforce or substitute the visual sense, but the limited human haptic short-term memory still poses a challenge. We present the haptic tuning fork, a reference signal displayed before the haptic information for increasing the discriminability of haptic icons. With this reference, the user does not depend only on short-term memory. We have decided to evaluate the usefulness of the haptic tuning fork in impedance kinesthetic devices as these are the most common. Furthermore, since the renderable signal ranges are device-dependent, we introduce a methodology to select a discriminable set of signals called the haptic scale. Both the haptic tuning fork and the haptic scale proved their usefulness in the performed experiments regarding haptic stimuli varying in frequency.
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Research context

OpenAlex topics: Tactile and Sensory Interactions · Teleoperation and Haptic Systems · EEG and Brain-Computer Interfaces

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Departamento de Ingeniería Centro Universitario en Tecnología y Arte Digital, Universidad Camilo Jose Cela, 28290 Madrid, Spain

The SPA Studios, 28023 Madrid, Spain

Departamento de Ciencias de la Computación, Arquitectura de Computadores, Lenguajes y Sistemas Informáticos y Estadística e Investigación Operativa, Escuela Técnica Superior de Ingeniería Informática, Campus de Móstoles, Universidad Rey Juan Carlos, 28933 Madrid, Spain

Center for Computation and Simulation, UPM, 28223 Madrid, Spain

Funding

Horizon 2020 · Ministerio de Economía y Competitividad

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