Differentiation of Types of Presbycusis Using the Masking-Level Difference Masking-level differences in quiet at 500 Hz were used to demonstrate evidence of elevated noise levels within the auditory systems of subjects with assumed neural presbycusis. The following five groups of subjects were evaluated: normal-hearing young and old adults; and older adults with metabolic, sensory, or neural presbycusis. The group ... Research Article
Research Article  |   December 01, 1982
Differentiation of Types of Presbycusis Using the Masking-Level Difference
 
Author Affiliations & Notes
  • Robert E. Novak
    San Diego State University, San Diego, California
  • Charles V. Anderson
    University of Iowa, Iowa City
Article Information
Research Articles
Research Article   |   December 01, 1982
Differentiation of Types of Presbycusis Using the Masking-Level Difference
Journal of Speech, Language, and Hearing Research, December 1982, Vol. 25, 504-508. doi:10.1044/jshr.2504.504
History: Received August 25, 1980 , Accepted September 24, 1981
 
Journal of Speech, Language, and Hearing Research, December 1982, Vol. 25, 504-508. doi:10.1044/jshr.2504.504
History: Received August 25, 1980; Accepted September 24, 1981

Masking-level differences in quiet at 500 Hz were used to demonstrate evidence of elevated noise levels within the auditory systems of subjects with assumed neural presbycusis. The following five groups of subjects were evaluated: normal-hearing young and old adults; and older adults with metabolic, sensory, or neural presbycusis. The group with assumed neural presbycusis—that is, bilateral high-frequency sensorineural hearing loss and poor word-recognition performance—had masking-level differences (a) in quiet that were significantly larger than those for the other groups and (b) in noise that were significantly smaller than those for the other groups. The data suggest that elevated internal noise levels accompany neural presbycusis.

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