Isolating the locus of articulation errors

Buchwald, Adam and Miozzo, Michele (2011) Isolating the locus of articulation errors. [Clinical Aphasiology Paper]

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Abstract

Speech production minimally includes a level encoding context-specific articulatory timing patterns (motor plans) and a level with context-independent (phonemic) representations. Impairment to motor planning is associated with AOS whereas phonological impairment is associated with phonemic paraphasia. Each of these frequently co-occurring deficits produces articulatory errors whose loci are difficult to determine.  Using acoustic analysis, we report on two individuals diagnosed with AOS and PP who make similar articulatory errors (/s/-deletion), and identify one individual whose errors reflect deletions after the motor plan is generated, and another whose errors reflect deletion prior to motor planning.

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