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Related Experiment Video

Updated: Apr 1, 2026

Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Sensorimotor influences on speech perception in infancy.

Alison G Bruderer¹, D Kyle Danielson², Padmapriya Kandhadai²

¹School of Audiology and Speech Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada V6T1Z3; Department of Psychology, University of British Columbia, Vancouver, BC, Canada V6T1Z4 agreuel@audiospeech.ubc.ca.

Proceedings of the National Academy of Sciences of the United States of America

|October 14, 2015

Summary

This summary is machine-generated.

Infants

Keywords:

infancy language acquisition perception–production

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Area of Science:

Developmental Psychology
Linguistics
Neuroscience

Background:

The link between speech production and perception is known in adults.
The role of experience in this linkage is unclear due to adult language history.

Purpose of the Study:

To investigate if articulatory configurations influence speech perception in preverbal infants.
To examine the perception-production linkage before extensive linguistic experience.

Main Methods:

Studied 6-month-old infants discriminating a nonnative speech sound.
Used teething toys to control infant tongue movement during auditory tasks.
Employed ultrasound imaging to verify tongue constraint.
Utilized a looking-time procedure to assess discrimination abilities.

Main Results:

Restraining infant articulators impaired discrimination of a nonnative consonant contrast.
This impairment occurred only when specific articulators involved in sound production were constrained.
Ultrasound confirmed effective control over tongue positioning and movement.

Conclusions:

Sensorimotor information from articulators influences speech perception even before first words.
Oral-motor movements impact speech sound discrimination in early development.
Experimental oral-motor constraint affects perceptual performance, suggesting potential impacts of long-term impairments.