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Related Experiment Videos

Developmental changes in masked thresholds.

B A Schneider1, S E Trehub, B A Morrongiello

  • 1Department of Psychology, Erindale Campus, University of Toronto, Mississauga, Ontario, Canada.

The Journal of the Acoustical Society of America
|November 1, 1989
PubMed
Summary
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Auditory masking thresholds improve with age, showing an exponential decline from infancy to adulthood. This developmental pattern is consistent across various sound frequencies and bandwidths, mirroring auditory system maturation.

Area of Science:

  • Auditory Neuroscience
  • Developmental Audiology

Background:

  • Auditory masking thresholds are crucial for understanding speech perception in noisy environments.
  • Developmental changes in auditory processing continue through adolescence.

Purpose of the Study:

  • To investigate the developmental trajectory of masked auditory thresholds in children and adolescents.
  • To determine if auditory maturation rates vary with sound frequency or bandwidth.

Main Methods:

  • Masked auditory thresholds were measured using octave-band and 1/3-octave-band noises.
  • Participants ranged in age from 6.5 months to 20.5 years.
  • Measurements were taken with and without a broadband masker present.

Main Results:

Related Experiment Videos

  • Masked thresholds showed an exponential decline with increasing age for all tested auditory stimuli.
  • The rate and extent of threshold improvement were independent of sound frequency and bandwidth.
  • The developmental time course aligns with the maturation of central auditory pathways.

    • Conclusions:

    • Auditory masking abilities mature significantly from infancy through young adulthood.
    • This maturation process is largely consistent across different sound characteristics, suggesting a generalized developmental trend.
    • Findings support the parallel development of peripheral and central auditory system functions.