01754nas a2200181   4500008004100000245007800041210006900119300001200188520115100200653001901351653001201370653001301382100001501395700001501410700001701425700002001442856011001462       1999                        eng d00aThe Role of Contact Area Spread Rate in Haptic Discrimination of Softness0 aRole of Contact Area Spread Rate in Haptic Discrimination of Sof  a305-3103 a<p>Many applications in teleoperation and virtual reality call for the implementation of effective means of displaying to the human operator information on the softness and other mechanical properties of objects being touched. The ability of humans to detect softness of different objects by tactual exploration is intimately related to both kinesthetic and cutaneous perception, and haptic displays should be designed so as to address such multimodal perceptual channel. Unfortunately, accurate detection and replication of cutaneous information in all its details appears to be a formidable task for current technology, causing most of today's haptic displays to merely address the kinesthetic part of haptic information. In this paper we investigate the possibility of surrogating detailed tactile information for softness discrimination, with information on the rate of spread of the contact area between the finger and the specimen. Devices for implementing this new perceptual channel are described, and some preliminary psychophysical test results are reported, validating the effectiveness and practicality of the proposed approach.</p>
10aBioengineering10aHaptics10aRobotics1 aAmbrosi, G1 aBicchi, A.1 aDe Rossi, D.1 aScilingo, E. P.  uhttp://175973.jxltd.asia/publications/role-contact-area-spread-rate-haptic-discrimination-softness.html-0