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The role of feedback in visual masking and visual processing
This paper reviews the potential role of feedback in visual masking, for and against. Our analysis reveals constraints for feedback mecha- nisms that limit their potential role in visual masking, and in all other general brain functions. We propose a feedforward model of visual masking, and provide...
Autores principales: | , |
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Formato: | Texto |
Lenguaje: | English |
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University of Finance and Management in Warsaw
2008
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2864985/ https://www.ncbi.nlm.nih.gov/pubmed/20517504 http://dx.doi.org/10.2478/v10053-008-0020-5 |
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author | Macknik, Stephen L. Martinez-Conde, Susana |
author_facet | Macknik, Stephen L. Martinez-Conde, Susana |
author_sort | Macknik, Stephen L. |
collection | PubMed |
description | This paper reviews the potential role of feedback in visual masking, for and against. Our analysis reveals constraints for feedback mecha- nisms that limit their potential role in visual masking, and in all other general brain functions. We propose a feedforward model of visual masking, and provide a hypothesis to explain the role of feedback in visual masking and visual processing in general. We review the anato-my and physiology of feedback mechanisms, and propose that the massive ratio of feedback versus feedforward connections in the visual system may be explained solely by the critical need for top-down attentional modulation. We discuss the merits of visual masking as a tool to discover the neural correlates of consciousness, especially as compared to other popular illusions, such as binocular rivalry. Finally, we propose a new set of neurophysiological standards needed to establish whether any given neuron or brain circuit may be the neural substrate of awareness. |
format | Text |
id | pubmed-2864985 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | University of Finance and Management in Warsaw |
record_format | MEDLINE/PubMed |
spelling | pubmed-28649852010-06-01 The role of feedback in visual masking and visual processing Macknik, Stephen L. Martinez-Conde, Susana Adv Cogn Psychol Research Article This paper reviews the potential role of feedback in visual masking, for and against. Our analysis reveals constraints for feedback mecha- nisms that limit their potential role in visual masking, and in all other general brain functions. We propose a feedforward model of visual masking, and provide a hypothesis to explain the role of feedback in visual masking and visual processing in general. We review the anato-my and physiology of feedback mechanisms, and propose that the massive ratio of feedback versus feedforward connections in the visual system may be explained solely by the critical need for top-down attentional modulation. We discuss the merits of visual masking as a tool to discover the neural correlates of consciousness, especially as compared to other popular illusions, such as binocular rivalry. Finally, we propose a new set of neurophysiological standards needed to establish whether any given neuron or brain circuit may be the neural substrate of awareness. University of Finance and Management in Warsaw 2008-07-15 /pmc/articles/PMC2864985/ /pubmed/20517504 http://dx.doi.org/10.2478/v10053-008-0020-5 Text en Copyright: © 2008 University of Finance and Management in Warsaw http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Macknik, Stephen L. Martinez-Conde, Susana The role of feedback in visual masking and visual processing |
title | The role of feedback in visual masking and visual
processing |
title_full | The role of feedback in visual masking and visual
processing |
title_fullStr | The role of feedback in visual masking and visual
processing |
title_full_unstemmed | The role of feedback in visual masking and visual
processing |
title_short | The role of feedback in visual masking and visual
processing |
title_sort | role of feedback in visual masking and visual
processing |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2864985/ https://www.ncbi.nlm.nih.gov/pubmed/20517504 http://dx.doi.org/10.2478/v10053-008-0020-5 |
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