Abstract：
UNLABELLED:A deficiency in sensorimotor integration in a person who stutters may be a factor in the pathophysiology of developmental stuttering. To test oral sensorimotor function in adults who stutter, we used a task that requires the coordination of a jaw-opening movement with phonation onset. The task was adapted from previous limb coordination studies, which show that movement coordination depends on intact proprioception. We hypothesized that adult stutterers would show deficient jaw-phonatory coordination relative to control participants. The task required initiation of phonation as a jaw-opening movement passed through a narrow spatial target. Target amplitude and jaw movement speed were varied. The stuttering group showed significantly higher movement error and spatial variability in jaw-phonatory coordination compared to the control group, but group differences in movement velocity or duration were not found. The aberrant jaw-phonatory coordination of the stuttering participants suggests that stuttering is associated with an oral proprioceptive limitation, although, the findings are also consistent with a motor control deficit. LEARNING OUTCOMES:As a result of this activity, reader will (1) learn about a hypothesis and evidence supporting the view that a sensorimotor deficit contributes to chronic developmental stuttering and (2) will obtain information about the role of proprioception in multi-articulatory coordination and how it can be tested using an oral-phonatory coordination task.
journal_name
J Commun Disordjournal_title
Journal of communication disordersauthors
Loucks TM,De Nil LF,Sasisekaran Jdoi
10.1016/j.jcomdis.2006.06.016subject
Has Abstractpub_date
2007-05-01 00:00:00pages
257-72issue
3eissn
0021-9924issn
1873-7994pii
S0021-9924(06)00061-Xjournal_volume
40pub_type
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