Neurophysiological Aspects of Speech Production
Classical descriptions of articulatory disorders have tended to be much concerned with analysis of error in the final stages of production. The use of terms like “substitution” and “distortion” borrowed from the literature of developmental assessment protocols demonstrates this tendency. Such Classification yields very limited information, whereas a type of analysis focussing on dynamic aspects of the articulatory process might prove to be more fruitful. Laver, writing in 1977 about normal speech production states: “The concentration of phonetic interest on articulation has led to the relative neglect by phoneticians of aspects of speech upstream as it were, from the movement of the peripheral speech apparatus” (p. 142). In relation to disorder such a downstream concentration is likely to limit understanding because underlying dysfunction may be insufficiently taken into account and as a consequence, important strategies for remediation overlooked.
KeywordsPurkinje Cell Cranial Nerve Muscle Spindle Speech Production Vocal Tract
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