Perceiving Texture Gradients on an Electrostatic Friction Display

Two experiments tested young adults’ ability to discriminate the direction of friction-defined textural gradients rendered by the Senseg FeelScreenTM. Gradients were particularly effective when they spanned the low end of the intensity range. This trend likely reflects saturation of the device’s rendering capabilities at high intensities, as confirmed by measurements with a manual linear tribometer. The results show promise for use of gradients rendered with variable friction displays to aid non-visual navigation on tablets.

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