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Related Experiment Video

Updated: Jun 13, 2025

Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Language experience shapes predictive coding of rhythmic sound sequences.

Piermatteo Morucci^1,2, Sanjeev Nara^2,3, Mikel Lizarazu²

¹Department of Fundamental Neurosciences, University of Geneva, Geneva, Switzerland.

|September 13, 2024

Summary

This summary is machine-generated.

Native language shapes auditory processing by creating long-term predictions. This study shows how linguistic background influences the brain's response to sound patterns, impacting early auditory perception.

Keywords:

auditory perception cross-linguistic effects human magnetoencephalography mismatch negativity neuroscience predictive coding prosody

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Area of Science:

Neuroscience
Psychoacoustics
Computational Linguistics

Background:

Perceptual systems utilize prior knowledge and predictions for environmental interpretation.
Short-term predictions in auditory perception are well-studied, but long-term predictive influences remain unclear.

Purpose of the Study:

Investigate how long-term linguistic experience shapes early auditory processing.
Determine if native language word order influences auditory predictions for non-linguistic sounds.

Main Methods:

Magnetoencephalography (MEG) recorded from native Spanish (functor-initial) and Basque (functor-final) speakers.
Participants listened to binary sound sequences alternating in duration, with occasional omissions.
Mismatch negativity (MMN) amplitude analyzed in relation to linguistic background and sound properties.

Main Results:

MMN amplitude varied based on linguistic background, particularly in the left auditory cortex.
Group differences were specific to duration-based sound sequences, not pitch-based ones.
Results support the hypothesis of language-specific long-term duration priors influencing auditory processing.

Conclusions:

Lifelong language exposure shapes fundamental auditory perception, specifically the neural processing of rhythmic sounds.
Provides direct evidence for a long-term predictive coding system in the auditory cortex.
Internal models based on native language prosody influence how the brain predicts and processes incoming sound sequences.