Effect of mechanical ground on the vibrotactile perceived intensity of a handheld object

Authors:
Inwook Hwang;Seungmoon Choi
Affiliations:
Haptics and Virtual Reality Laboratory, Department of Computer Science and Engineering, Pohang University of Science and Technology (POSTECH), Republic of Korea;Haptics and Virtual Reality Laboratory, Department of Computer Science and Engineering, Pohang University of Science and Technology (POSTECH), Republic of Korea
Venue:
EuroHaptics'12 Proceedings of the 2012 international conference on Haptics: perception, devices, mobility, and communication - Volume Part II
Year:
2012

Citing 2
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Psychophysical model for vibrotactile rendering in mobile devices

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Abstract

This study investigates the effect of mechanical ground on the perceived intensity of vibration transmitted through a handheld object. To this end, we carried out an intensity matching experiment in which the points of subjective equality were measured between grounded and ungrounded conditions. Results showed that the grounded vibrations were perceived to be 1.63---1.86 times stronger than the ungrounded vibrations. This intensity difference was decreased with increasing vibration frequency. Our results are in line with the general fact that afferent movements, which are more apparent under the ungrounded condition, may induce tactile suppression.