The phase coherence of cortical oscillations predicts dynamic changes in perceived visibility.

ABSTRACT: The phase synchronization of brain oscillations plays an important role in visual processing, perceptual awareness, and performance. Yet, the cortical mechanisms underlying modulatory effects of post-stimulus phase coherence and frequency-specific oscillations associated with different aspects of vision are still subject to debate. In this study, we aimed to identify the post-stimulus phase coherence of cortical oscillations associated with perceived visibility and contour discrimination. We analyzed electroencephalogram data from two masking experiments where target visibility was manipulated by the contrast ratio or polarity of the mask under various onset timing conditions (stimulus onset asynchronies, SOAs). The behavioral results indicated an SOA-dependent suppression of target visibi

SUBMITTER: Akdogan I 

PROVIDER: S-EPMC11422671 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature