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Updated: May 25, 2026

Concurrent EEG and Functional MRI Recording and Integration Analysis for Dynamic Cortical Activity Imaging

Concurrent EEG and Functional MRI Recording and Integration Analysis for Dynamic Cortical Activity Imaging

Published on: June 30, 2018

Disparity-specific spatial interactions: evidence from EEG source imaging.

Benoit R Cottereau¹, Suzanne P McKee, Justin M Ales

¹Department of Psychology, Stanford University, Stanford, California 94305, USA. b.cottereau@stanford.edu

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience

|January 21, 2012

Summary

This summary is machine-generated.

Extrastriate visual areas V4, LOC, and hMT+ respond to relative disparity, while V3A shows a unique gain modulation sensitive to disparity differences. V1 only processes absolute disparity.

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Concurrent EEG and Functional MRI Recording and Integration Analysis for Dynamic Cortical Activity Imaging

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Cortical Source Analysis of High-Density EEG Recordings in Children

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Published on: June 30, 2014

Area of Science:

Neuroscience
Visual Perception
Computational Neuroscience

Background:

Understanding how the brain processes depth perception is crucial for visual neuroscience.
The role of different visual areas in interpreting relative disparity cues remains an active area of research.

Purpose of the Study:

To investigate the influence of surround disparity on neural responses in human visual areas.
To differentiate between absolute and relative disparity processing in early and extrastriate visual cortex.

Main Methods:

High-density electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) were used in human participants.
Cortical source estimation techniques were applied to analyze neural activity.
Responses were measured in five visual regions of interest (ROIs): V1, V4, lateral occipital complex (LOC), hMT+, and V3A.

Main Results:

V1 responses were unaffected by surround characteristics, indicating absolute disparity processing.
V4, LOC, and hMT+ showed increased responses with correlated surrounds, suggesting sensitivity to relative disparity.
V3A exhibited responses modulated by surround correlation and disparity, modeled as gain modulation and nonlinear center-surround interactions.

Conclusions:

Extrastriate areas (V4, LOC, hMT+) are sensitive to relative disparity, unlike V1.
V3A demonstrates a complex mechanism for processing relative disparity, involving gain modulation and nonlinear interactions.
Findings advance our understanding of the neural basis of depth perception and disparity processing in the human visual system.