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Related Experiment Video

Updated: Nov 10, 2025

Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Language Proficiency Entails Tuning Cortical Activity to Second Language Speech.

Mikel Lizarazu^1,2, Manuel Carreiras^1,3, Mathieu Bourguignon^1,4,5

¹BCBL, Basque center on Cognition, Brain and Language, Donostia-San Sebastian, 20009, Spain.

Cerebral Cortex (New York, N.Y. : 1991)

|April 1, 2021

Summary

This summary is machine-generated.

Second language learners

Keywords:

brain oscillations cortical speech-tracking magnetoencephalography second language learning top-down modulations

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Area of Science:

Neuroscience
Linguistics
Cognitive Science

Background:

Cortical tracking of speech, including phrases (delta band) and syllables (theta band), is vital for language comprehension.
The relationship between this neural tracking and second language (L2) proficiency remains unclear.

Purpose of the Study:

To investigate how auditory cortical activity tracks L2 speech in learners with varying proficiency levels.
To determine if neural oscillations and top-down modulations are linked to L2 learning success.

Main Methods:

Magnetoencephalography (MEG) was used to record brain activity in Spanish native speakers learning Basque (L2).
Participants were categorized into beginner, intermediate, and advanced proficiency levels.
Analysis focused on delta and theta band activity during L2 speech perception.

Main Results:

Both delta and theta band tracking of L2 speech in the auditory cortex correlated positively with L2 proficiency.
Top-down modulations from frontal and temporal regions to auditory cortex during L2 listening also showed a relationship with L2 proficiency.

Conclusions:

Successful L2 learning is associated with effective cortical tracking of L2 speech.
Neuronal oscillations and higher-order cortical region modulation play a significant role in L2 acquisition and proficiency.