Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- AI Hallucination(also: Model Hallucination, Confabulation)
- The phenomenon where an AI model generates confident, plausible-sounding responses that are factually incorrect, fabricated, or not grounded in the actual input data. In accessibility contexts, AI hallucinations pose a serious safety concern — for example, a multimodal AI…
- Acoustic Vehicle Alerting System(also: AVAS, Minimum sound requirement, Pedestrian warning sound)
- A class of vehicle systems that emit artificial sound to alert pedestrians and other road users to the presence and movement of quiet vehicles — typically electric and hybrid vehicles at low speeds, where tire and aerodynamic noise are insufficient for detection. Regulatory…
- Alarm Fatigue(also: Alert Fatigue, Notification Fatigue)
- A phenomenon in which an individual becomes desensitised to alarms, alerts, or notifications due to their excessive frequency, repetitive nature, or lack of meaningful context, leading the person to ignore, snooze, or dismiss them. In healthcare and medication management, alarm…
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