Neural Response Time of Stutterers and Nonstutterers in Selected Oral Motor Tasks Neural response time (NRT) was compared for 12 adult stutterers and 12 matched normal speakers on two verbal tasks (production of /pæ/ and /bæ/) and one oral, nonverbal task (lip closure) in response to visual and auditory stimulation. The auditory response stimulus was presented separately to the left and right ... Research Article
Research Article  |   December 01, 1978
Neural Response Time of Stutterers and Nonstutterers in Selected Oral Motor Tasks
 
Author Affiliations & Notes
  • Stephen C. McFarlane
    University of Nevada, Reno
  • David Prins
    University of Washington, Seattle
Article Information
Research Articles
Research Article   |   December 01, 1978
Neural Response Time of Stutterers and Nonstutterers in Selected Oral Motor Tasks
Journal of Speech, Language, and Hearing Research, December 1978, Vol. 21, 768-778. doi:10.1044/jshr.2104.768
History: Received November 7, 1977 , Accepted March 28, 1978
 
Journal of Speech, Language, and Hearing Research, December 1978, Vol. 21, 768-778. doi:10.1044/jshr.2104.768
History: Received November 7, 1977; Accepted March 28, 1978

Neural response time (NRT) was compared for 12 adult stutterers and 12 matched normal speakers on two verbal tasks (production of /pæ/ and /bæ/) and one oral, nonverbal task (lip closure) in response to visual and auditory stimulation. The auditory response stimulus was presented separately to the left and right ears, and the visual stimulus to both eyes. NRT was defined as the time interval between stimulus offset and the onset of electromyographic (EMG) activity from orbicularis oris superior muscle. Results show, in general, that stutterers are slower in NRT for all response tasks in both stimulus modes. Significant differences were found, however, for only the auditory mode. Analyses of the differences between and within groups for response tasks and stimulus modes are discussed in terms of recent research in and theory of timing disturbances in stuttering.

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