Treating Interarticulator Coordination in Apraxia of Speech with Variable Practice

Ballard, Kirrie and Maas, Edwin and Robin, Donald and Guo, Ling-Yu (2005) Treating Interarticulator Coordination in Apraxia of Speech with Variable Practice. [Clinical Aphasiology Paper]

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Abstract

Few treatments for Apraxia of Speech (AOS) report positive response generalization. This is addressed with a treatment for improving control of voicing for plosives and fricatives based on motor learning principles and incorporating spectrographic biofeedback to establish articulatory goals. Two individuals with AOS (one with aphasia) were tested using multiple baselines across subjects and behaviors designs. Participants acquired trained phonemes, generalized treatment effects to untrained phonemes within manner class, and maintained effects for 2-3 months. Results support application of PML, specifically, varied practice, random stimulus order, and delayed low frequency feedback. Using biofeedback for training and scoring reliability is discussed.

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