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Motion processing with wide-field neurons in the retino-tecto-rotundal pathway
The retino-tecto-rotundal pathway is the main visual pathway in non-mammalian vertebrates and has been found to be highly involved in visual processing. Despite the extensive receptive fields of tectal and rotundal wide-field neurons, pattern discrimination tasks suggest a system with high spatial r...
Autores principales: | , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Springer US
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2825320/ https://www.ncbi.nlm.nih.gov/pubmed/19795201 http://dx.doi.org/10.1007/s10827-009-0186-y |
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author | Dellen, Babette Wessel, Ralf Clark, John W. Wörgötter, Florentin |
author_facet | Dellen, Babette Wessel, Ralf Clark, John W. Wörgötter, Florentin |
author_sort | Dellen, Babette |
collection | PubMed |
description | The retino-tecto-rotundal pathway is the main visual pathway in non-mammalian vertebrates and has been found to be highly involved in visual processing. Despite the extensive receptive fields of tectal and rotundal wide-field neurons, pattern discrimination tasks suggest a system with high spatial resolution. In this paper, we address the problem of how global processing performed by motion-sensitive wide-field neurons can be brought into agreement with the concept of a local analysis of visual stimuli. As a solution to this problem, we propose a firing-rate model of the retino-tecto-rotundal pathway which describes how spatiotemporal information can be organized and retained by tectal and rotundal wide-field neurons while processing Fourier-based motion in absence of periodic receptive-field structures. The model incorporates anatomical and electrophysiological experimental data on tectal and rotundal neurons, and the basic response characteristics of tectal and rotundal neurons to moving stimuli are captured by the model cells. We show that local velocity estimates may be derived from rotundal-cell responses via superposition in a subsequent processing step. Experimentally testable predictions which are both specific and characteristic to the model are provided. Thus, a conclusive explanation can be given of how the retino-tecto-rotundal pathway enables the animal to detect and localize moving objects or to estimate its self-motion parameters. |
format | Text |
id | pubmed-2825320 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-28253202010-02-25 Motion processing with wide-field neurons in the retino-tecto-rotundal pathway Dellen, Babette Wessel, Ralf Clark, John W. Wörgötter, Florentin J Comput Neurosci Article The retino-tecto-rotundal pathway is the main visual pathway in non-mammalian vertebrates and has been found to be highly involved in visual processing. Despite the extensive receptive fields of tectal and rotundal wide-field neurons, pattern discrimination tasks suggest a system with high spatial resolution. In this paper, we address the problem of how global processing performed by motion-sensitive wide-field neurons can be brought into agreement with the concept of a local analysis of visual stimuli. As a solution to this problem, we propose a firing-rate model of the retino-tecto-rotundal pathway which describes how spatiotemporal information can be organized and retained by tectal and rotundal wide-field neurons while processing Fourier-based motion in absence of periodic receptive-field structures. The model incorporates anatomical and electrophysiological experimental data on tectal and rotundal neurons, and the basic response characteristics of tectal and rotundal neurons to moving stimuli are captured by the model cells. We show that local velocity estimates may be derived from rotundal-cell responses via superposition in a subsequent processing step. Experimentally testable predictions which are both specific and characteristic to the model are provided. Thus, a conclusive explanation can be given of how the retino-tecto-rotundal pathway enables the animal to detect and localize moving objects or to estimate its self-motion parameters. Springer US 2009-10-01 2010 /pmc/articles/PMC2825320/ /pubmed/19795201 http://dx.doi.org/10.1007/s10827-009-0186-y Text en © The Author(s) 2009 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Article Dellen, Babette Wessel, Ralf Clark, John W. Wörgötter, Florentin Motion processing with wide-field neurons in the retino-tecto-rotundal pathway |
title | Motion processing with wide-field neurons in the retino-tecto-rotundal pathway |
title_full | Motion processing with wide-field neurons in the retino-tecto-rotundal pathway |
title_fullStr | Motion processing with wide-field neurons in the retino-tecto-rotundal pathway |
title_full_unstemmed | Motion processing with wide-field neurons in the retino-tecto-rotundal pathway |
title_short | Motion processing with wide-field neurons in the retino-tecto-rotundal pathway |
title_sort | motion processing with wide-field neurons in the retino-tecto-rotundal pathway |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2825320/ https://www.ncbi.nlm.nih.gov/pubmed/19795201 http://dx.doi.org/10.1007/s10827-009-0186-y |
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