Rehabilitation Sciences 3061A/B Lecture 5: Lecture 5: CSD
12 May 2017
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Document Summary
Ability to receive, send, process, and comprehend concepts. Verbal means of communicating or conveying meaning. Speech involves several components that work together to convey and/or enhance meaning: precise motor sequences that produce language-specific sounds and sound combinations (phonemes) according to rules of the language, voice quality. Neuromuscular process that involves planning and execution in order to express language using 3 systems: respiration, phonation, articulation. Speech disorders: breakdown in one of these 3 systems. Normal speech depends on: consistent and even breathstream, appropriate level and pitch of voice, precise articulation of phonemes, fluent production. Articulation and phonology disorders: distortions, substitutions, and omissions of speech sounds. Motor speech disorders: apraxia and dysarthria. Conventional code accepted by a social group to represent concepts. Speech is not an essential feature (eg. asl) Language code involves: socially accepted and shared code of symbols, uses arbitrary symbols, combining symbols using unique set of rules, evolves over time.
