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Related Experiment Video

Updated: May 21, 2026

Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Brain Oscillations and Functional Connectivity during Overt Language Production.

Arne Ewald¹, Sabrina Aristei, Guido Nolte

¹NIRx Medizintechnik GmbH Berlin, Germany.

Frontiers in Psychology

|June 16, 2012

Summary

This study reveals brain connectivity patterns during overt language tasks. Enhanced EEG analysis identified theta-band communication between occipito-temporal and frontal regions, crucial for language processing.

Keywords:

brain oscillations functional connectivity overt language production semantic interference

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fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals

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Published on: May 23, 2017

Area of Science:

Neuroscience
Cognitive Science
Psycholinguistics

Background:

Investigating brain communication during overt language production is essential for understanding cognitive processes.
Previous methods for estimating functional connectivity in EEG data have limitations, particularly regarding volume conduction artifacts.

Purpose of the Study:

To investigate large-scale brain site communication during overt language production using advanced EEG functional connectivity estimation.
To explore differences in brain network activity between semantically homogeneous and heterogeneous object naming tasks.

Main Methods:

Participants engaged in a semantic blocking task (naming objects in homogeneous or heterogeneous categories).
Electroencephalography (EEG) data were analyzed using the imaginary part of coherency (ImC) to estimate functional connectivity.
Source localization was performed using a minimum norm inverse solution based on ImC to identify dominant brain sources.

Main Results:

Pronounced differences in functional connectivity were observed in the theta band (around 7 Hz) between the two experimental conditions.
Source localization revealed significant connectivity between occipito-temporal and frontal brain areas.
These identified regions are known to be critical for lexical-semantic language processing.

Conclusions:

The study demonstrates the feasibility of using EEG functional connectivity, specifically ImC, to investigate interactive brain activity during overt language production.
Findings highlight the role of theta-band connectivity between occipito-temporal and frontal regions in semantic language tasks.