Studies of Articulatory Feedback Treatment for Apraxia of Speech Based on Electromagnetic Articulography

Abstract

Electromagnetic articulography (EMA) is a method originally designed for the laboratory measurement of speech articulatory motion (Schönle et al., 1987). We describe a novel use of this technology applied to the remediation of apraxia of speech (AOS). In this experimental technique, individuals with AOS are provided with real-time, visual information concerning the movement of the tongue during speech. From information sent via EMA sensors mounted on the tongue, patients are guided into hitting “targets” displayed on a computer monitor, designed to guide correct articulatory placement. The results of several studies suggest that augmented feedback-based treatment is efficacious and that this treatment follows principles of motor learning described in the limb motor literature. Potential challenges facing this type of approach, as well as some new directions, are discussed.