Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Fixation(also: Visual Fixation, Gaze Fixation)
- A period during which the eyes remain relatively stationary on a specific point or area, typically lasting 100 to 600 milliseconds. During fixations, the brain processes the visual information at the point of gaze. In eye-tracking research, fixations are a primary unit of…
- Frequency Selectivity(also: Auditory Frequency Resolution, Critical Band Selectivity)
- Frequency selectivity is the auditory system's ability to separate closely-spaced frequencies into distinct perceptual streams — the reason a typical listener can follow one voice in a crowd, hear the bass line under a melody, or distinguish similar speech sounds like 's' and…
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