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Related Experiment Video

Updated: Sep 11, 2025

Analyzing Neural Activity and Connectivity Using Intracranial EEG Data with SPM Software

Analyzing Neural Activity and Connectivity Using Intracranial EEG Data with SPM Software

Published on: October 30, 2018

Interhemispheric integration in the neural face perception network: Does stimulus location matter?

Julia Elina Stocker¹, Antonia Schulz¹, Ina Thome¹

¹Department of Psychiatry and Psychotherapy, University of Marburg, Marburg, Germany.

Imaging Neuroscience (Cambridge, Mass.)

|August 13, 2025

Summary

This summary is machine-generated.

Stimulus location influences brain connectivity during face perception. Peripheral face presentation results in different neural network patterns compared to central presentation, affecting interhemispheric transfer.

Keywords:

DCM FFA OFA fMRI face perception interhemispheric transfer lateralization network peripheral stimulation

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Area of Science:

Neuroscience
Cognitive Science
Neuroimaging

Background:

Hemispheric lateralization research often uses peripheral stimuli, potentially differing from central processing.
Understanding interhemispheric integration requires models applicable to typical foveal processing.

Purpose of the Study:

To investigate how stimulus location (peripheral vs. central) affects neural network connectivity during face perception.
To compare interhemispheric transfer mechanisms for peripheral versus central face stimuli using fMRI and DCM.

Main Methods:

Functional magnetic resonance imaging (fMRI) on 17 healthy volunteers viewing peripheral or central face and object images.
Dynamic Causal Modelling (DCM) to analyze neural network connectivity and interhemispheric transfer.
Bayesian Model Averaging (BMA) to integrate parameters across five connectivity models.

Main Results:

Bilateral face-sensitive regions (FFA, OFA) and V1 were identified.
Peripheral face stimuli induced significantly different interhemispheric transfer patterns compared to central stimuli.
Asymmetrical connectivity patterns were observed for left and right visual field presentations.

Conclusions:

Stimulus location critically modulates neural network connectivity in face processing.
Peripheral and central face presentations activate distinct processing pathways.
Central stimulus processing aligns more closely with typical face perception networks.