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THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH
The flicker response contour has been determined, with equality of light-dark time ratio, for the diurnal bird the Australian zebra finch. This bird has only cones in the retina. The curve of log critical intensity as a function of flash frequency is simplex, a normal probability integral. In this r...
Autores principales: | , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
The Rockefeller University Press
1941
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2237992/ https://www.ncbi.nlm.nih.gov/pubmed/19873239 |
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author | Crozier, W. J. Wolf, Ernst |
author_facet | Crozier, W. J. Wolf, Ernst |
author_sort | Crozier, W. J. |
collection | PubMed |
description | The flicker response contour has been determined, with equality of light-dark time ratio, for the diurnal bird the Australian zebra finch. This bird has only cones in the retina. The curve of log critical intensity as a function of flash frequency is simplex, a normal probability integral. In this respect it is like that for other vertebrates not exhibiting visual duplexity. The parameters of the curve most closely approach those for the turtle Pseudemys (extrapolated to about the same temperature); it is not improbable that the approximation of these two curves would be less close for other values of the light-time fraction. Some points of interpretive visual theory are discussed in relation to the present measurements. |
format | Text |
id | pubmed-2237992 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1941 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-22379922008-04-23 THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH Crozier, W. J. Wolf, Ernst J Gen Physiol Article The flicker response contour has been determined, with equality of light-dark time ratio, for the diurnal bird the Australian zebra finch. This bird has only cones in the retina. The curve of log critical intensity as a function of flash frequency is simplex, a normal probability integral. In this respect it is like that for other vertebrates not exhibiting visual duplexity. The parameters of the curve most closely approach those for the turtle Pseudemys (extrapolated to about the same temperature); it is not improbable that the approximation of these two curves would be less close for other values of the light-time fraction. Some points of interpretive visual theory are discussed in relation to the present measurements. The Rockefeller University Press 1941-05-20 /pmc/articles/PMC2237992/ /pubmed/19873239 Text en Copyright © Copyright, 1941, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Article Crozier, W. J. Wolf, Ernst THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH |
title | THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH |
title_full | THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH |
title_fullStr | THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH |
title_full_unstemmed | THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH |
title_short | THE SIMPLEX FLICKER THRESHOLD CONTOUR FOR THE ZEBRA FINCH |
title_sort | simplex flicker threshold contour for the zebra finch |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2237992/ https://www.ncbi.nlm.nih.gov/pubmed/19873239 |
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