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AOS is a loss of prior speech ability resulting from a brain injury such as a stroke or progressive illness. Developmental verbal dyspraxia (DVD), also known as childhood apraxia of speech (CAS) and developmental apraxia of speech (DAS), [ 3 ] [ 4 ] is an inability to utilize motor planning to perform movements necessary for speech during a ...
Speech sound disorders (SSDs) can arise from a variety of causes, which are generally categorized into organic and functional factors: Organic causes These include physical or neurological issues that affect speech production: hearing loss, including temporary hearing loss, such as from ear infections; developmental disorders (e.g. autism)
Language-based learning disabilities, which refer to difficulties with reading, spelling, and/or writing that are evidenced in a significant lag behind the individual's same-age peers. Most children with these disabilities are at least of average intelligence, ruling out intellectual impairments as the causal factor.
Agraphia is an acquired neurological disorder causing a loss in the ability to communicate through writing, either due to some form of motor dysfunction [1] or an inability to spell. [2] The loss of writing ability may present with other language or neurological disorders; [1] disorders appearing commonly with agraphia are alexia, aphasia ...
Trembling or shaking of one or more of the muscles of the larynx, resulting in an unsteady-sounding voice. Voice Sound produced by air passing out through the larynx and upper respiratory tract. Voice disorders Group of problems involving abnormal pitch, loudness, or quality of the sound produced by the larynx (voice box).
However, it is not uncommon for a single person to have a mixed speech sound disorder with both phonemic and phonetic components. Stuttering (AKA “Dysphemia”) [11] affects approximately 1% of the adult population. [2] Voice disorders are impairments, often physical, that involve the function of the larynx or vocal resonance.
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Prosodic control is essential to speech delivery because it establishes vocal identity, since each individual's voice has unique characteristics. There are two types of dysprosody, linguistic and emotional, that each present with slightly different symptoms. It is possible that one can present with both forms of dysprosody. [citation needed]