Abstract
We consider a mechanical filter with using a High Density Pin Matrix. Various pin matrices with different spatial resolution were created. Before evaluating how the spatial resolution affects the tactile perception, we referred to the result obtained in physiological research. The pin matrix with small tip curvature was created for confirming the effect of the pin-tip for sense of touch. The consideration suggested that small curvature of the pin tip produces noisy tactile signal comparing with bigger curvature one. This prediction was consistent with the perceptual impression, i.e., some subjects felt tickling sensation with pin matrices with narrow diameter pin-rod and small curvature pin-rod.
