Browsing by Author "Bäder, Timm"

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Open Access
Enriching passive touch sensation on flat surfaces using visual feedback
(2014) Bäder, Timm
While human computer interaction has evolved around touch interaction a lot in recent years, it's been lacking any haptic feedback from the very beginning. Nowadays, devices using touch interaction all to do on a flat surface, using either a projection of digital contents or a touch screen. Since haptic feedback is an important factor in human surface perception, people have tried various ways to simulate haptic feedback even on completely flat surfaces. One of these ways is electrotacile feedback, which has mostly been used to simulate surface properties on active touch where the user has to move their finger over the surface in order to feel the haptic sensation. Previous research shows that vision is also a very important factor in surface perception and proprioception in general. We conducted a user study to investigate the influence of visual feedback on passive touch using electrotactile feedback. We concentrated on simulating depth instead of roughness which doesn't word particularly well for passive touch. We found that even though both electrotactile and visual feedback work well for depth or softness if applied individually, as soon as we presented our study subjects a condition with both feedback types, they did not repond to it anymore.