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Related Experiment Video

Updated: May 7, 2026

Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Oscillatory support for rapid frequency change processing in infants.

Gabriella Musacchia¹, Naseem A Choudhury, Silvia Ortiz-Mantilla

¹Communication Sciences and Disorders, Montclair State University1515 N Broad Street, Bloomfield, NJ 07003; Center for Molecular & Behavioral Neuroscience, Rutgers University, 197 University Avenue, Newark NJ 07102, USA.

Neuropsychologia

|September 24, 2013

Summary

This summary is machine-generated.

Infant auditory perception relies on brain wave activity, specifically theta band oscillations in the auditory cortex, to process rapid pitch changes. This processing differs between brain hemispheres, with the right hemisphere showing earlier activation.

Keywords:

Auditory Child Hemispheric asymmetry Infant Oscillations Rapid processing

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Published on: December 6, 2016

Area of Science:

Neuroscience
Developmental Psychology
Auditory Neuroscience

Background:

Rapid auditory processing and change detection are vital for speech and language development in infants.
Low-frequency brain oscillations are implicated in auditory processing in animal models and adults.

Purpose of the Study:

To investigate the neural mechanisms underlying infant perception of rapid pitch and timing changes.
To examine the role of oscillatory synchrony in auditory processing in 4-month-old infants.

Main Methods:

Utilized event-related potentials (ERPs), source localization, and time-frequency analysis of event-related oscillations (EROs).
Employed an oddball paradigm with standard (800-800 Hz) and deviant (800-1200 Hz) tones at rapid (70 ms ISI) and control (300 ms ISI) rates.
Analyzed neural activity in the auditory cortex of 4-month-old infants.

Main Results:

Infants showed greater ERP amplitude to deviant tones, with later and larger peaks at the rapid rate.
Right auditory regions exhibited faster and larger activation compared to the left hemisphere.
Theta band oscillations in the right auditory cortex were enhanced by deviant tones, with left hemisphere involvement only at the rapid rate.

Conclusions:

Local low-frequency oscillatory synchrony supports rapid auditory processing and perception in infants.
Hemispheric differences in auditory processing emerge early, with the left hemisphere potentially contributing to rapid change discrimination.