Glossary

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Phonophobia(also: Sound Phobia, Ligyrophobia)

Phonophobia is an intense fear or aversion to specific sounds or loud noises that goes beyond simple discomfort, often leading to avoidance behaviors such as fleeing from environments where triggering sounds may occur. Unlike hyperacusis (heightened sensitivity to sound volume)…

Post-lingual Deafness(also: Post-linguistic Deafness, Acquired Deafness, Late-Onset Deafness)

Deafness that occurs after a person has acquired spoken language, meaning they have existing literacy in written and spoken language. Post-lingual deaf users can typically read and write fluently, making text-based accessibility features like captions and transcripts highly…

Postlingual Deafness(also: Postlingually Deaf, Acquired Hearing Loss)

Hearing loss that occurs after a person has acquired spoken language, typically after about age three to five. Postlingually deaf people usually retain spoken-language fluency, literacy, and memory of sound, which affects their rehabilitation trajectory and their experience of…

Pre-lingual Deafness(also: Pre-linguistic Deafness, Congenital Deafness)

Deafness that occurs before a person acquires spoken language, either present from birth or developing in early childhood. People with pre-lingual deafness typically use sign language as their primary means of communication and may have limited literacy in written/spoken…

Prelingual Deafness(also: Prelingually Deaf, Congenital Deafness)

Deafness present at birth or acquired before a child has developed spoken language, typically before around age three. Prelingually deaf individuals commonly learn a signed language as a first language and may have different literacy trajectories in the surrounding…

Presbycusis(also: Age-Related Hearing Loss, Presbyacusis)

A gradual, progressive loss of hearing in both ears that occurs as a natural part of aging, primarily affecting the ability to perceive higher-frequency sounds. Presbycusis is the most common cause of hearing loss in older adults and has significant implications for the design…

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