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Updated: Mar 14, 2026

Infant Auditory Processing and Event-related Brain Oscillations
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Speech Perception and Preparation Are Supported by Distinct Neural Dynamics Across Development.

Yanni Liu1, Amanda Hampton Wray2, Soo-Eun Chang1,3

  • 1Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA.

Neurobiology of Language (Cambridge, Mass.)
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Summary

Beta oscillations, crucial for speech timing, show developmental differences. Adults exhibit mature beta power decreases during speech tasks, while children

Keywords:
EEGbeta oscillationsdevelopmental trajectoriesspeech processing

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Speech Science

Background:

  • Neural oscillations, particularly beta oscillations (13-30 Hz), are vital for precise timing and sensorimotor integration in speech.
  • Beta oscillations support motor planning, attention, and anticipation, but their developmental trajectory in speech processing is not well understood.

Purpose of the Study:

  • To investigate developmental differences in beta oscillation dynamics during speech perception and production.
  • To compare beta power modulation in adults and children across different speech-related tasks.

Main Methods:

  • Electroencephalography (EEG) was used to record brain activity in 28 adults and 50 children.
  • Participants performed speech perception ('Hear') and production ('Say') tasks, alongside a control task ('See').
  • Beta power changes were analyzed in three distinct time windows relative to task cues.

Main Results:

  • Adults demonstrated significant beta power decreases across all time windows and conditions, indicative of mature integration.
  • Children showed minimal beta reduction, with no significant condition-specific effects.
  • Beta modulation in children was negatively correlated with age, suggesting ongoing neural maturation.

Conclusions:

  • Significant developmental differences exist in beta oscillation dynamics during speech processing.
  • These findings underscore the maturational changes in neural mechanisms supporting speech timing and sensorimotor control from childhood to adulthood.