Visuomotor tracking abilities of speakers with apraxia of speech or conduction aphasia  

Oleh:

Robin, Donald A. ; Jacks, Adam ; Hageman, Carlin ; Clark, Heather M. ; Woodworth, George

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 106 no. 2 (2008), page 98-106.
Topik: Apraxia of speech; Conduction aphasia; Visuomotor tracking; Motor programming; Motor speech disorders; Speech motor control
Fulltext: 106_02_Robin.pdf (231.44KB)

Isi artikel

This investigation examined the visuomotor tracking abilities of persons with apraxia of speech (AOS) or conduction aphasia (CA). In addition, tracking performance was correlated with perceptual judgments of speech accuracy. Five individuals with AOS and four with CA served as participants, as well as an equal number of healthy controls matched by age and gender. Participants tracked predictable (sinusoidal) and unpredictable signals using jaw and lip movements transduced with strain gauges. Tracking performance in participants with AOS was poorest for predictable signals, with decreased kinematic measures of crosscorrelation and gain ratio and increased target-tracker difference. In contrast, tracking of the unpredictable signal by participants with AOS was performed as well as for other groups (e.g. participants with CA, healthy controls). Performance of the subjects with AOS on the predictable tracking task was found to strongly correlate with perceptual judgments of speech. These findings suggest that motor control capabilities are impaired in AOS, but not in CA. Results suggest that AOS has its basis in motor programming deficits, not impaired motor execution.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali