Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Egocentric(also: Egocentric Reference Frame, Body-Centred Reference Frame)
- A spatial reference frame in which locations and directions are defined relative to the observer's own body position and orientation. For example, "turn left," "take one step forward," or "the door is on your right" are egocentric descriptions. People with visual impairments…
- Embodied Exploration
- An approach to virtual environment interaction in which the user builds understanding of a space by physically walking, turning, reaching, and sweeping rather than by teleporting or using controller-based locomotion. Embodied exploration is particularly important for blind and…
- Environmental Flow(also: Optic Flow, Sensory Flow)
- The ordered changes in a pedestrian's distances and directions to surrounding objects that occur while walking, providing continuous feedback about spatial position and movement through the environment. For sighted people, environmental flow is primarily visual (optic flow), but…
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