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The EEG Activity during Binocular Depth Perception of 2D Images
Marsel Fazlyyyakhmatov1, Nataly Zwezdochkina1, Vladimir Antipov1
1Kazan Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russia.
Computational Intelligence and Neuroscience
|April 19, 2018
Summary
This study explored brain activity during 3D image perception. Alpha-band activity decreased in frontal and parietal areas, suggesting increased attention during stereo vision tasks.
Area of Science:
- Neuroscience
- Cognitive Science
- Visual Perception
Background:
- Stereoscopic vision's role in depth perception is well-studied.
- Its function in cognitive processes remains less explored.
Purpose of the Study:
- Investigate cortical activity during a cognitive task involving binocular viewing of a 3D phenomenon.
- Assess changes in brain activity related to stereo vision's cognitive aspects.
Main Methods:
- Electroencephalography (EEG) recorded cortical activity.
- Analysis focused on alpha-band power changes during false image perception from random-dot stereograms.
Main Results:
- A decrease in alpha-band activity was observed in the left parietal and bilateral frontal areas during stereo perception.
- Beta-1, beta-2, and delta frequency bands showed no significant changes.
Conclusions:
- Suppression of alpha rhythm is linked to heightened attention required for eye refocusing.
- This highlights the cognitive role of stereo vision and attention.
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