Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Sensory Saltation(also: Cutaneous Rabbit Effect, Tactile Saltation)
- A perceptual phenomenon in which a series of rapid taps delivered at discrete locations on the skin are perceived as a continuous movement or hopping sensation across the surface between the tap points. In assistive technology, sensory saltation is exploited in haptic interfaces…
- Shape Display(also: 2.5D Shape Display, Pin Display, Tactile Shape Display)
- A physical computing device consisting of a grid of motorised pins that can be raised and lowered to create dynamic tactile relief surfaces. Shape displays render digital 3D content as physical topographies that users can explore by touch, providing real-time haptic feedback…
- Skin Stretch Display(also: Skin Stretch, Lateral Skin Deformation Display, STReSS)
- A type of haptic display technology that produces tactile feedback by laterally stretching the skin of the user's fingertip, rather than using raised pins or vibration. Skin stretch displays typically use arrays of small actuators (such as piezoelectric bending motors) that…
- Spatio-Temporal Modulation(also: STM)
- A rendering technique used in mid-air ultrasound haptics in which a single focal point is moved rapidly along a closed trajectory (commonly circular) while its intensity is modulated over time. When the trajectory is swept fast enough (typically tens to hundreds of Hz), the skin…
- Surface Haptics(also: Surface Haptic Technology)
- A branch of haptic technology that creates tactile sensations directly on a flat surface, such as a touchscreen, by modulating the friction between a fingertip and the display. Unlike conventional vibration motors that shake the entire device, surface haptics produces localised…
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