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EPG Treatment for AOS (Mauszycki et al., 2016)

journal contribution
posted on 16.12.2021, 22:49 by Shannon C. Mauszycki, Sandra Wright, Nicole Dingus, Julie L. Wambaugh
Purpose: This investigation was designed to examine the effects of an articulatory-kinematic treatment in conjunction with visual biofeedback (VBFB) via electropalatography (EPG) on the accuracy of articulation for acquired apraxia of speech (AOS).
Method: A multiple-baseline design across participants and behaviors was used with 4 individuals with chronic AOS and aphasia. Accuracy of target speech sounds in treated and untreated phrases in probe sessions served as the dependent variable. Participants received an articulatory-kinematic treatment in combination with VBFB, which was sequentially applied to 3 stimulus sets composed of 2-word phrases with a target speech sound for each set.
Results: Positive changes in articulatory accuracy were observed for participants for the majority of treated speech sounds. Also, there was generalization to untreated phrases for most trained speech sounds. Two participants had better long-term maintenance of treated speech sounds in both trained and untrained stimuli.
Conclusions: Findings indicate EPG may be a potential treatment tool for AOS. It appears that individuals with AOS can benefit from VBFB via EPG in improving articulatory accuracy. However, further research is needed to determine if VBFB is more advantageous than behavioral treatments that have been proven effective in improving speech production for speakers with AOS.


This research was supported by a Career Development Award RX000749-01 (awarded to Shannon C. Mauszycki) and Research Career Scientist Award #23727 (awarded to Julie L. Wambaugh) from the U.S. Department of Veterans Affairs Rehabilitation Research & Development Service.