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Computational Intelligence and Neuroscience
Volume 2018 (2018), Article ID 5623165, 7 pages
https://doi.org/10.1155/2018/5623165
Research Article

The EEG Activity during Binocular Depth Perception of 2D Images

Kazan Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russia

Correspondence should be addressed to Marsel Fazlyyyakhmatov

Received 26 October 2017; Accepted 1 January 2018; Published 30 January 2018

Academic Editor: Victor Hugo C. De Albuquerque

Copyright © 2018 Marsel Fazlyyyakhmatov et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The central brain functions underlying a stereoscopic vision were a subject of numerous studies investigating the cortical activity during binocular perception of depth. However, the stereo vision is less explored as a function promoting the cognitive processes of the brain. In this work, we investigated a cortical activity during the cognitive task consisting of binocular viewing of a false image which is observed when the eyes are refocused out of the random-dot stereogram plane (3D phenomenon). The power of cortical activity before and after the onset of the false image perception was assessed using the scull EEG recording. We found that during stereo perception of the false image the power of alpha-band activity decreased in the left parietal area and bilaterally in frontal areas of the cortex, while activity in beta-1, beta-2, and delta frequency bands remained to be unchanged. We assume that this suppression of alpha rhythm is presumably associated with increased attention necessary for refocusing the eyes at the plane of the false image.