This study investigated the acoustic phonetic characteristics of Korean diphthongs in 16 healthy controls, in 8 speakers with spastic dysarthria, and in 8 speakers with flaccid dysarthria. The subjects read /ja/, /wi/ and mean formant values were analyzed based on the spectrograms. The formant transition duration for the vowel /ja/ was longer for speakers with flaccid dysarthria than the contro...

Background Dysarthria refers to a group of disorders resulting from disturbances in muscular control over the speech mechanism due to damage of central or peripheral nervous system. There is wide subjective variability in assessment of dysarthria between different clinicians. In our study, we tried to identify a pattern among types of dysarthria by acoustic analysis and to prevent intersubject ...

The Four-Level Framework of speech sensorimotor control (Van der Merwe, 1997) complicates the traditional view of dysarthria as a purely motor execution disorder. According to this framework, hypokinetic, hyperkinetic and ataxic dysarthria are programming-execution dysarthrias, while flaccid dysarthria is the only execution dysarthria. This preliminary study aimed to differentiate programming-e...