Vibrotactile displays worn on the back can be used as sensory substitution device. Often
vibrotactile stimulation is chosen because vibration motors are easy to incorporate and
relatively cheap. When designing such displays knowledge about vibrotactile perception on
the back is crucial. In the current study we investigated distance perception. Biases in
distance perception can explain spatial distortions that occur when, for instance, tracing a
shape using vibration. We investigated the effect of orientation (horizontal vs vertical), the …