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Updated: Sep 22, 2025

Infant Auditory Processing and Event-related Brain Oscillations
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Prenatal auditory experience and its sequelae.

Marin Vogelsang1,2, Lukas Vogelsang2,3, Sidney Diamond2

  • 1School of Computer and Communication Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.

Developmental Science
|May 18, 2022
PubMed
Summary
This summary is machine-generated.

Early fetal auditory exposure to low-pass filtered sounds may enhance neural development for better auditory processing. This in utero experience aids in recognizing emotional prosody and improves later auditory skills.

Keywords:
deep networksemotion recognitionhuman developmentprenatal hearing

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Area of Science:

  • Auditory Neuroscience
  • Computational Auditory Processing
  • Developmental Psychology

Background:

  • Fetal auditory development begins in the second trimester, with in utero sound exposure being low-pass filtered.
  • This limited auditory input may play a role in shaping neural pathways for sound processing.

Purpose of the Study:

  • To test the hypothesis that degraded in utero auditory input promotes the development of extended temporal integration.
  • To investigate if this developmental adaptation enhances the processing of low-frequency auditory information, such as emotional prosody.

Main Methods:

  • Computational modeling was used to simulate auditory training regimens.
  • A model system was trained and tested on emotion recognition using various auditory trajectories, including one mimicking pre- to postnatal development.

Main Results:

  • Training with a biomimetic auditory trajectory (low-pass filtered to full-frequency) resulted in extended receptive field structures.
  • This specific training regimen led to superior accuracy and generalization in emotion recognition tasks.

Conclusions:

  • The progression from filtered to full-frequency auditory input appears to be an adaptive developmental feature.
  • This adaptation benefits later auditory processing, particularly for tasks requiring temporally extended analysis, and has implications for neonatal care and computational modeling.