Correcting for Visuo-Haptic Biases in 3D Haptic Guidance

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2016 Jul 21

PMID 27438009

Authors

Femke E van Beek

Irene A Kuling

Eli Brenner

Wouter M Bergmann Tiest

Astrid M L Kappers

Affiliations

Soon will be listed here.

Abstract

Visuo-haptic biases are observed when bringing your unseen hand to a visual target. The biases are different between, but consistent within participants. We investigated the usefulness of adjusting haptic guidance to these user-specific biases in aligning haptic and visual perception. By adjusting haptic guidance according to the biases, we aimed to reduce the conflict between the modalities. We first measured the biases using an adaptive procedure. Next, we measured performance in a pointing task using three conditions: 1) visual images that were adjusted to user-specific biases, without haptic guidance, 2) veridical visual images combined with haptic guidance, and 3) shifted visual images combined with haptic guidance. Adding haptic guidance increased precision. Combining haptic guidance with user-specific visual information yielded the highest accuracy and the lowest level of conflict with the guidance at the end point. These results show the potential of correcting for user-specific perceptual biases when designing haptic guidance.

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