Abstract
A phantom sensation refers to an illusory tactile sensation perceived midway between multiple distant stimulations on the skin. Phantom sensations have been used intensively in tactile interfaces owing to their simplicity and effectiveness. Despite that, the perceptual performance of phantom sensations is not completely understood, especially for 2D cases. This work is concerned with 2D stationary phantom sensations and their fundamental value as a means for information display. In User Study 1, we quantified the information transmission capacity using an absolute identification task of 2D phantom sensations. In User Study 2, we probed the distributions of the actual perceived positions of 2D phantom sensations. The investigations included both types of phantom sensations-within and out of the body. Our results provide general guidelines as to leveraging 2D phantom sensations in the design of spatial tactile display.
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