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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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Virtual Texture(also: Simulated Texture, Haptic Texture)
A virtual texture is a computer-generated tactile surface property rendered through a haptic device, simulating the feel of roughness, smoothness, or other surface characteristics without a physical material being present. Virtual textures are created by varying the resistance,…
Vista Space(also: Vista)
In Montello's classification of psychological spaces, a Vista is a far-field space that can be visually apprehended from a single vantage point without appreciable locomotion - a horizon view, a city skyline, a mountain panorama. Vista spaces matter to accessibility because they…
Visual Cognition(also: Visual Processing, Visual Perception)
The set of mental processes involved in perceiving, interpreting, and responding to visual information, including object recognition, spatial awareness, motion detection, and visual attention allocation. Deaf and hard-of-hearing individuals demonstrate heightened visual…
Visual Crowding(also: Crowding)
A perceptual phenomenon in which the presence of nearby flanking characters or objects makes it harder to recognise a target character, especially in peripheral vision or when the target is small, low-contrast, or briefly viewed. Crowding jointly with limited visual span sets an…

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