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The impact of simultaneously applying normal stress and vibrotactile stimulation for feedback of exteroceptive information

Motamedi Reza, Otis Martin J.-D. et Duchaine Vincent. (2017). The impact of simultaneously applying normal stress and vibrotactile stimulation for feedback of exteroceptive information. Journal of Biomechanical Engineering, 139, (6), 061004.

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Commercially available prosthetic hands do not convey any tactile information, forcing amputees to rely solely on visual attention. A promising solution to this problem is haptics, which could lead to new prostheses in which tactile information is conveyed between the amputee and the artificial limb. However, the haptic feedback must be optimized so that amputees can use it effectively; and although several studies have examined how specific haptic feedback systems can transmit certain types of tactile information, there has not yet been much research on the effects of superposing two or more types of feedback at the same location, which might prove to be more effective than using a single type of feedback alone. This paper investigates how the simultaneous application of two different types of haptic feedback—vibration and normal stress—impacts the human sensory perception of each separate feedback type. These stimuli were applied to glabrous skin on the forearms of 14 participants. Our experiments tested whether participants experienced more accurate sensory perception, compared to vibration or normal stress alone, when vibration was applied at the same time as the normal stress, at either the same location, or at a different location 6 cm away. Results indicate that although participants' perception of the normal stress diminished when vibration was applied at the same location, the same combination improved their perception of the vibration. Apparently, vibration has a negative impact upon the ability to perceive normal stress, whether applied at the same or a different location; whereas the opposite is true for the effect of normal stress upon the perception of vibration.

Type de document:Article publié dans une revue avec comité d'évaluation
Version évaluée par les pairs:Oui
Date:24 Juin 2017
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie électrique et génie électronique
Sciences naturelles et génie > Sciences appliquées
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:artificial organs, prostheses, feedback, stress, vibration, haptics, skin, pressure, organes artificiels, prothèses, Larsen, stress, vibration, haptique, peau, pression, neural system, haptics, sensory substitution, human mechanoreception, upper-limb amputees
Déposé le:25 févr. 2021 00:31
Dernière modification:25 févr. 2021 00:31
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