Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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Anarthria: A severe motor speech disorder characterized by complete or near-complete loss of the ability to produce speech due to muscle weakness or paralysis affecting the articulatory organs (tongue, lips, palate, larynx). Unlike aphasia, which affects language processing, anarthria…
Dysfluency(also: Disfluency, Speech Dysfluency): An interruption in the normal flow of speech, including repetitions of sounds, syllables, or words ("b-b-because"), prolongations of sounds ("ssssnake"), blocks (silent pauses where speech is temporarily stopped), and interjections ("um", "uh"). While occasional dysfluencies are…
Lee Silverman Voice Treatment(also: LSVT, LSVT LOUD): An evidence-based speech therapy programme originally developed for individuals with Parkinson's disease that focuses on increasing vocal loudness as the primary mechanism for improving overall speech clarity. LSVT trains patients to "think loud" and speak with greater effort,…

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