From Visual Perception to Consciousness

A special issue of Brain Sciences (ISSN 2076-3425). This special issue belongs to the section "Systems Neuroscience".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1536

Special Issue Editor


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Guest Editor
Department of Biomedical Sciences, University of Sassari, V.le San Pietro 46/b, 1-07100 Sassari, Italy
Interests: visual illusions and paradoxes; psychophysics and experimental phenomenology of visual processes (spatial vision, motion perception, color vision, shape perception and perceptual meaning); perceptual organization; visual science of art; visual design
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Special Issue Information

Dear Colleagues,

The progression from vision to consciousness entails a cascade of complex neural processes that occur within the brain. A simplified overview of the sequence is provided below:

  1. Sensory input;
  2. Early visual processing;
  3. Feature integration;
  4. Object recognition;
  5. Attention and selection;
  6. Global processing and binding;
  7. Higher-level processing;
  8. Phenomenal consciousness and visual awareness.

The perceptual and cognitive mechanisms underlying the journey from vision to consciousness are still actively investigated and debated in scientific research. The complexity of consciousness and its relationship to the underlying cognitive and neural processes make it a challenging and ongoing area of investigation that spans disciplines such as psychology, cognitive neuroscience, and artificial intelligence.

The aim and scope of this Special Issue are as follows:

  1. To address the following questions: "How does consciousness emerge from visual perception?" and "How does consciousness influence vision?"
  2. To bring together scientists and scholars from different disciplines for multidisciplinary interactions, aiming to deepen the understanding of intrinsic problems, principles, phenomena, and illusions related to the transition from vision to consciousness.
  3. To stimulate the development of new insights, theories, and approaches that transcend the usual boundaries of scientific and cultural disciplines and provide new insights into existing mechanisms and processes.

All article types are welcome.

Prof. Dr. Baingio Pinna
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Brain Sciences is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (1 paper)

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Research

14 pages, 2797 KiB  
Article
Probing the Bottleneck of Awareness Formed by Foveal Crowding: A Neurophysiological Study
by Ziv Siman-Tov, Maria Lev and Uri Polat
Brain Sci. 2024, 14(2), 169; https://doi.org/10.3390/brainsci14020169 - 07 Feb 2024
Viewed by 1187
Abstract
Crowding occurs when an easily identified isolated stimulus is surrounded by stimuli with similar properties, making it very difficult to identify. Crowding is suggested as a mechanism that creates a bottleneck in object recognition and awareness. Recently, we showed that brief presentation times [...] Read more.
Crowding occurs when an easily identified isolated stimulus is surrounded by stimuli with similar properties, making it very difficult to identify. Crowding is suggested as a mechanism that creates a bottleneck in object recognition and awareness. Recently, we showed that brief presentation times at the fovea resulted in a significant crowding effect on target identification, impaired the target’s color awareness, and resulted in a slower reaction time. However, when tagging the target with a red letter, the crowding effect is abolished. Crowding is widely considered a grouping; hence, it is pre-attentive. An event-related potential (ERP) study that investigated the spatial–temporal properties of crowding suggested the involvement of higher-level visual processing. Here, we investigated whether ERP’s components may be affected by crowding and tagging, and whether the temporal advantage of ERP can be utilized to gain further information about the crowding mechanism. The participants reported target identification using our standard foveal crowing paradigm. It is assumed that crowding occurs due to a suppressive effect; thus, it can be probed by changes in perceptual (N1, ~160 ms) and attentive (P3 ~300–400 ms) components. We found a suppression effect (less negative ERP magnitude) in N1 under foveal crowding, which was recovered under tagging conditions. ERP’s amplitude components (N1 and P3) and the behavioral proportion correct are highly correlated. These findings suggest that crowding is an early grouping mechanism that may be combined with later processing involving the segmentation mechanism. Full article
(This article belongs to the Special Issue From Visual Perception to Consciousness)
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