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Behavioral tests of auditory processing: a study on reference values for normal-hearing adults.

Sthella Zanchetta1, Laura Caetano Meneghelli2, Pamela Papile Lunardelo3

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Summary
This summary is machine-generated.

Auditory processing (AP) declines with age, impacting tests like GIN, PPS, and DDT, but not MLD. Age-specific reference values are crucial for accurate AP assessment in adults.

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Area of Science:

  • Audiology
  • Neuroscience
  • Gerontology

Background:

  • Auditory processing (AP) is crucial for understanding speech and environmental sounds.
  • Age-related changes in auditory function can impact AP, even in individuals with normal hearing.
  • Establishing normative data for AP tests is essential for clinical diagnosis and management.

Purpose of the Study:

  • To analyze and compare the performance of various clinical auditory processing tests in adults with normal hearing across different age groups.
  • To identify age-related differences in AP test outcomes.
  • To propose age-specific reference values for these tests to aid in clinical interpretation.

Main Methods:

  • 116 adults aged 18-59 years with normal hearing and no auditory complaints were evaluated.
  • Participants were native Brazilian Portuguese speakers.
  • Tests administered included Masking Level Difference (MLD), Gaps-In-Noise (GIN), Pitch Pattern Sequence (PPS), Duration Pattern Sequence (DPS), and Dichotic Digits Test (DDT).

Main Results:

  • Significant age-related declines in performance were observed for GIN, PPS, and DDT starting around age 40.
  • DPS performance showed significant differences between younger (18-29 years) and older (50-59 years) adults.
  • The MLD was the only test that did not exhibit significant age-related differences.

Conclusions:

  • Auditory processing abilities decline with age, necessitating age-specific reference values for clinical tests.
  • The Masking Level Difference (MLD) test remains stable across adulthood, making it a reliable measure.
  • Proposed reference values for MLD, GIN, PPS, DPS, and DDT are provided for different adult age ranges.