NDLI: Evaluation of force and torque magnitude discrimination thresholds on the human hand-arm system

Content Provider	ACM Digital Library
Author	Galvan, S. Vicentini, M. Fiorini, P. Botturi, D.
Copyright Year	2010
Abstract	This article reports on experiments about haptic perception aimed at measuring the force/torque differential thresholds applied to the hand-arm system. The experimental work analyzes how force is sent back to the user by means of a 6 degrees-of-freedom haptic device. Our findings on force perception indicate that the just-noticeable-difference is generally higher than previously reported in the literature and not constant along the stimulus continuum. We found evidence that the thresholds change also among the different directions. Furthermore, asymmetries in force perceptions, which were not described in previous reports, can be evinced for most of the directions. These findings support our claim that human beings perceive forces differently along different directions, thus suggesting that perception can also be enhanced by suitable signal processing, that is, with a manipulation of the force signal before it reaches the haptic device. We think that the improvement of the user perception can have a great impact in many applications and in particular we are focusing on surgical teleoperation scenarios.
Starting Page	1
Ending Page	16
Page Count	16
File Format	PDF
ISSN	15443558
e-ISSN	15443965
DOI	10.1145/1857893.1857894
Volume Number	8
Issue Number	1
Journal	ACM Transactions on Applied Perception (TAP)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-11-10
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Force thresholds Perceptual asymmetries Perceptual-based signal processing
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Theoretical Computer Science Computer Science

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