Speech disorders following severe traumatic brain injury: kinematic analysis of syllable repetitions using electromagnetic articulography.
Using electromagnetic articulography, the lips, the tip of the tongue, and the tongue dorsum were tracked during repetitions of the syllables [pa], [ta] and [ka] in 10 speakers with dysarthria following severe traumatic brain injury and in 10 age-matched control subjects. When asked to produce the syllable trains as fast as possible, the patient group showed a rather homogeneous pattern of movement abnormalities including prolonged syllable durations and reduced peak velocity/amplitude ratios. Most presumably, limited speed generation gives rise to the impaired ability to increase speech rate. During the habitual speaking condition, reduced velocity/amplitude ratios were restricted to the tongue tip and tongue dorsum. Obviously, the tongue and the lips are differentially affected in dysarthria following severe traumatic brain injury.
Jaeger
M
M
Lurija Institute for Rehabilitation Sciences and Health Research, University of Konstanz, Germany. jaeger.marion@t-online.de
Hertrich
I
I
Stattrop
U
U
Schönle
P W
PW
Ackermann
H
H
D000328:Adult; D001184:Articulation Disorders / Q000175:diagnosis / Q000209:etiology*; D001930:Brain Injuries / Q000150:complications* / Q000175:diagnosis; D004401:Dysarthria / Q000175:diagnosis / Q000209:etiology*; D004574:Electromagnetic Fields; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010700:Phonetics; D012016:Reference Values; D013068:Speech Production Measurement / Q000295:instrumentation*