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Related Experiment Videos

Developmental changes in distinguishing concurrent auditory objects.

Claude Alain1, Eef L Theunissen, Hélène Chevalier

  • 1Rotman Research Institute, Baycrest Centre for Geriatric Care, 3560 Bathurst Street, Toronto, Ontario M6A 2E1Canada. calain@rotman-baycrest.on.ca

Brain Research. Cognitive Brain Research
|April 2, 2003
PubMed
Summary
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Children

Area of Science:

  • Auditory Neuroscience
  • Developmental Psychology
  • Speech Perception

Background:

  • Children struggle with speech perception in noisy environments.
  • Central auditory functions are key to separating concurrent sounds.
  • Age-related differences in auditory processing are not fully understood.

Purpose of the Study:

  • Investigate age-related differences in auditory scene analysis.
  • Compare behavioral and brain responses in children and adults to mistuned sounds.
  • Understand the maturation of auditory object segregation processes.

Main Methods:

  • Used behavioral tasks and event-related brain potentials (ERPs).
  • Presented complex sounds with a 'mistuned' harmonic to 17 children and 17 adults.

Related Experiment Videos

  • Measured detection of mistuning and the object-related negativity (ORN) ERP component.

    • Main Results:

    • Both children and adults detected mistuning, but children were less sensitive (lower d').
    • The object-related negativity (ORN) response increased with mistuning in both groups.
    • Children showed a larger ORN than adults, despite lower behavioral sensitivity.

    Conclusions:

    • Concurrent sound segregation appears similar in children and adults.
    • Children may be less efficient in processing mistuning information.
    • Auditory object segregation continues to mature through adolescence.