Visual Evoked-Response Correlates of Speechreading Performance in Normal-Hearing Adults A Replication and Factor Analytic Extension Research Article
Research Article  |   March 01, 1983
Visual Evoked-Response Correlates of Speechreading Performance in Normal-Hearing Adults
 
Author Affiliations & Notes
  • Vincent J. Samar
    National Technical Institute for the Deaf, Rochester Institute of Technology, Rochester, New York
  • Donald G. Sims
    National Technical Institute for the Deaf, Rochester Institute of Technology, Rochester, New York
Article Information
Research Articles
Research Article   |   March 01, 1983
Visual Evoked-Response Correlates of Speechreading Performance in Normal-Hearing Adults
Journal of Speech, Language, and Hearing Research, March 1983, Vol. 26, 2-9. doi:10.1044/jshr.2601.02
History: Received June 1, 1981 , Accepted January 1, 1982
 
Journal of Speech, Language, and Hearing Research, March 1983, Vol. 26, 2-9. doi:10.1044/jshr.2601.02
History: Received June 1, 1981; Accepted January 1, 1982

The relationship between the latency of the negative peak occurring at approximately 130 msec in the visual evoked-response (VER) and speechreading scores was investigated. A significant product-moment correlation of -.58 was obtained between the two measures, which confirmed the fundamental effect but was significantly weaker than that previously reported in the literature (-.90). Principal components analysis of the visual evoked-response waveforms revealed a previously undiscovered early VER component, statistically independent of the latency measure, which in combination with two other components predicted speechreading with a multiple correlation coefficient of S4. The potential significance of this new component for the study of individual differences in speechreading ability is discussed.

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