Mental Rotation of Digitally-Rendered Haptic Objects.

Détails

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Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_2B9C26363635
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Mental Rotation of Digitally-Rendered Haptic Objects.
Périodique
Frontiers in integrative neuroscience
Auteur(s)
Tivadar R.I., Rouillard T., Chappaz C., Knebel J.F., Turoman N., Anaflous F., Roche J., Matusz P.J., Murray M.M.
ISSN
1662-5145 (Print)
ISSN-L
1662-5145
Statut éditorial
Publié
Date de publication
2019
Peer-reviewed
Oui
Volume
13
Pages
7
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Résumé
Sensory substitution is an effective means to rehabilitate many visual functions after visual impairment or blindness. Tactile information, for example, is particularly useful for functions such as reading, mental rotation, shape recognition, or exploration of space. Extant haptic technologies typically rely on real physical objects or pneumatically driven renderings and thus provide a limited library of stimuli to users. New developments in digital haptic technologies now make it possible to actively simulate an unprecedented range of tactile sensations. We provide a proof-of-concept for a new type of technology (hereafter haptic tablet) that renders haptic feedback by modulating the friction of a flat screen through ultrasonic vibrations of varying shapes to create the sensation of texture when the screen is actively explored. We reasoned that participants should be able to create mental representations of letters presented in normal and mirror-reversed haptic form without the use of any visual information and to manipulate such representations in a mental rotation task. Healthy sighted, blindfolded volunteers were trained to discriminate between two letters (either L and P, or F and G; counterbalanced across participants) on a haptic tablet. They then tactually explored all four letters in normal or mirror-reversed form at different rotations (0°, 90°, 180°, and 270°) and indicated letter form (i.e., normal or mirror-reversed) by pressing one of two mouse buttons. We observed the typical effect of rotation angle on object discrimination performance (i.e., greater deviation from 0° resulted in worse performance) for trained letters, consistent with mental rotation of these haptically-rendered objects. We likewise observed generally slower and less accurate performance with mirror-reversed compared to prototypically oriented stimuli. Our findings extend existing research in multisensory object recognition by indicating that a new technology simulating active haptic feedback can support the generation and spatial manipulation of mental representations of objects. Thus, such haptic tablets can offer a new avenue to mitigate visual impairments and train skills dependent on mental object-based representations and their spatial manipulation.
Mots-clé
haptic, low vision, mental rotation, multisensory, object, sensory substitution, vision impairment
Pubmed
Web of science
Open Access
Oui
Création de la notice
15/04/2019 9:46
Dernière modification de la notice
20/08/2019 14:11
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