Spatial resolution of vibrotactile perception on the human forearm when exploiting funneling illusion

Recent advances in man-machine interaction, telerobotics, telepresence and teleaction have shown that introducing the haptic modality to multimedia applications has the power to significantly widen their application range and to dramatically improve the user experience. Especially, the human body surface has been considered as an additional means of presenting information using vibrotactile display devices. In this context, spatial displacement of a vibrotactile stimulus can be deployed for information display. By exploiting a psychophysical illusion called ¿funneling illusion¿, we are able to increase the spatial resolution of vibrotactile displays. In this paper, we aim at investigating the spatial resolution of vibrotactile perception on the human forearm when applying multiple ¿funneling¿ stimuli. In our psychophysical experiments, we revealed the human spatial perception ability on the human forearm for stationary and moving vibrotactile stimuli.