Glossary
Searchable terminology from accessibility, web standards, and related fields.
25 results found in blindness.
- Spatial Representation (Spatial Mental Model)
- A cognitive structure that encodes information about the layout, distances, and relationships between locations in an environment. For blind and partially sighted people, spatial representations are b…
- Tactile Acuity (Touch Acuity, Tactile Resolution)
- The ability to perceive and discriminate fine spatial details through the sense of touch, analogous to visual acuity for sight. Tactile acuity varies across body regions, with fingertips having the hi…
- Tactile Graphics (Tactile Images, Tactile Diagrams, Raised-Line Graphics)
- Visual information represented in a form that can be perceived through touch, enabling people who are blind or have low vision to access images, diagrams, maps, charts, and spatial layouts. Tactile gr…
- Taylor Frame (Taylor Mathematical Slate, Taylor Slate, Math Frame)
- A tactile tool used by visually impaired students to perform arithmetic calculations. The device consists of a rectangular board with rows of holes into which small lead or plastic bars are inserted. …
- Vibro-audio Interface (VAI)
- An assistive technology that combines vibration patterns and audio feedback to convey spatial and graphical information through touchscreen devices. Originally developed to make maps and diagrams acce…