Visual-Neural Correlate of Speechreading Ability in Normal-Hearing Adults Reliability Research Article
Research Article  |   December 01, 1982
Visual-Neural Correlate of Speechreading Ability in Normal-Hearing Adults
 
Author Affiliations & Notes
  • David C. Shepherd
    University of South Florida, Tampa
Article Information
Research Articles
Research Article   |   December 01, 1982
Visual-Neural Correlate of Speechreading Ability in Normal-Hearing Adults
Journal of Speech, Language, and Hearing Research, December 1982, Vol. 25, 521-527. doi:10.1044/jshr.2504.521
History: Received August 25, 1980 , Accepted March 8, 1982
 
Journal of Speech, Language, and Hearing Research, December 1982, Vol. 25, 521-527. doi:10.1044/jshr.2504.521
History: Received August 25, 1980; Accepted March 8, 1982

In 1977, Shepherd and colleagues reported significant correlations (–.90, –.91) between speechreading scores and the latency of a selected negative peak (VN130 measure) on the averaged visual electroencephalic wave form. The primary purpose of this current study was to examine the stability, or repeatability, of this relation between these cognitive and neurophysiologic measures over a period of several months and thus support its test-retest reliability. Repeated speechreading word and sentence scores were gathered during three test-retest sessions from each of 20 normal-hearing adults. An average of 56 days occurred from the end of one to the beginning of another speechreading sessions. During each of four other test-retest sessions, averaged visual electroencephalic responses (AVERs) were evoked from each subject. An average of 49 clays intervened between AVER sessions. Product-moment correlations computed among repeated word scores and VNl30 measures ranged from –.61 to –.89. Based on these findings, it was concluded that the VNl30 measure of visual neural firing time is a reliable correlate of speech-reading in normal-hearing adults.

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