Effect of alphabet board supplementation and stimulus presentation mode on intelligibility of dysarthric speech
Montez, Natasha D.
Reduced intelligibility is a frequent and universal consequence of dysarthria. Intelligibility scores reflect the cumulative effects of all levels of speech production on the output produced by a speaker and provide an overall index of the severity. Several investigators have reported that the use of aided devices, such as an alphabet board may I increase intelligibility for dysarthric speakers. Improvements may result from decreased speaking rate, increased prosodic characteristics, or improved articulatory precision. It is not known if stimulus presentation mode influences these results. This study provided a means for examining the differences in single word intelligibility scores during aided and unaided conditions and the differences between stimulus presentation modes for single word production. Data were collected from selected individuals with dysarthria. Intelligibility scores were obtained from a group of 16 listeners. Results for these subjects indicated improved intelligibility across one subject during the aided task. No differences in intelligibility scores were found across the three stimulus presentation modes.
dysarthria, speech disorders, alphabet board, stimulus presentation modes, speech production
Montez, N. D. (2000). Effect of alphabet board supplementation and stimulus presentation mode on intelligibility of dysarthric speech (Unpublished thesis). Southwest Texas State University, San Marcos, Texas.