Visual processing of color and shape in people with leprosy
Main Author: | |
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Publication Date: | 2020 |
Other Authors: | , , |
Format: | Article |
Language: | eng |
Source: | Psicologia (Universidade Federal do Rio Grande do Sul. Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722020000100213 |
Summary: | Abstract The aim of this study was to analyze the contrast sensitivity of spatial luminance and the color discrimination thresholds of the protan, deutan, and tritan axes of people with leprosy. This study included 8 subjects with leprosy (M = 4, W = 4, M = 33.38 ± 8.7) and 8 healthy subjects (M = 4, W = 4, M = 30.89 ± 5.8). The contrast sensitivity was evaluated by the Metropsis software version 11.0 with vertical sinusoidal grids of frequencies of 0.2, 0.5, 1, 5, 10, and 16 cycles per degree of visual angle (cpd) and color vision by the desaturated Lanthony D15 tests and the trivector and ellipse protocols of the Cambridge Color Test. The results showed significant differences between the groups in the processing of spatial frequencies of 0.2 (U = 14; p = .018); 5.0 (U = 45.0; p = .001); 10.0 (U = 45.0; p = .001), and 16.0 (U = 45.0; p = .001) cpd. The difference in color recognition through D15d (U = 4.0; p = .002). Ellipse 2 (U = 10.0; p = .012) and ellipse 3 (U = 9.0; p = .009) were discriminated against. Overall, the results indicate that leprosy changes the visual processing of low, medium, and high spatial frequencies, as well as the sensitivity of the short wavelength (tritan line of confusion) and long (protan line of confusion) cones. |
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Visual processing of color and shape in people with leprosyContrast sensitivityColor confusion axlesLeprosyAbstract The aim of this study was to analyze the contrast sensitivity of spatial luminance and the color discrimination thresholds of the protan, deutan, and tritan axes of people with leprosy. This study included 8 subjects with leprosy (M = 4, W = 4, M = 33.38 ± 8.7) and 8 healthy subjects (M = 4, W = 4, M = 30.89 ± 5.8). The contrast sensitivity was evaluated by the Metropsis software version 11.0 with vertical sinusoidal grids of frequencies of 0.2, 0.5, 1, 5, 10, and 16 cycles per degree of visual angle (cpd) and color vision by the desaturated Lanthony D15 tests and the trivector and ellipse protocols of the Cambridge Color Test. The results showed significant differences between the groups in the processing of spatial frequencies of 0.2 (U = 14; p = .018); 5.0 (U = 45.0; p = .001); 10.0 (U = 45.0; p = .001), and 16.0 (U = 45.0; p = .001) cpd. The difference in color recognition through D15d (U = 4.0; p = .002). Ellipse 2 (U = 10.0; p = .012) and ellipse 3 (U = 9.0; p = .009) were discriminated against. Overall, the results indicate that leprosy changes the visual processing of low, medium, and high spatial frequencies, as well as the sensitivity of the short wavelength (tritan line of confusion) and long (protan line of confusion) cones.Curso de Pós-Graduação em Psicologia da Universidade Federal do Rio Grande do Sul2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722020000100213Psicologia: Reflexão e Crítica v.33 2020reponame:Psicologia (Universidade Federal do Rio Grande do Sul. Online)instname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGS10.1186/s41155-020-00153-winfo:eu-repo/semantics/openAccessSoares,Perla Figueredo CarreiroAndrade,Michael Jackson OliveiraAndrade,Sefora Luana EvangelistaSantos,Natanael Antonioeng2020-08-13T00:00:00Zoai:scielo:S0102-79722020000100213Revistahttps://www.scielo.br/j/prc/ONGhttps://old.scielo.br/oai/scielo-oai.phpprc@springeropen.com1678-71530102-7972opendoar:2020-08-13T00:00Psicologia (Universidade Federal do Rio Grande do Sul. Online) - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.none.fl_str_mv |
Visual processing of color and shape in people with leprosy |
title |
Visual processing of color and shape in people with leprosy |
spellingShingle |
Visual processing of color and shape in people with leprosy Soares,Perla Figueredo Carreiro Contrast sensitivity Color confusion axles Leprosy |
title_short |
Visual processing of color and shape in people with leprosy |
title_full |
Visual processing of color and shape in people with leprosy |
title_fullStr |
Visual processing of color and shape in people with leprosy |
title_full_unstemmed |
Visual processing of color and shape in people with leprosy |
title_sort |
Visual processing of color and shape in people with leprosy |
author |
Soares,Perla Figueredo Carreiro |
author_facet |
Soares,Perla Figueredo Carreiro Andrade,Michael Jackson Oliveira Andrade,Sefora Luana Evangelista Santos,Natanael Antonio |
author_role |
author |
author2 |
Andrade,Michael Jackson Oliveira Andrade,Sefora Luana Evangelista Santos,Natanael Antonio |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Soares,Perla Figueredo Carreiro Andrade,Michael Jackson Oliveira Andrade,Sefora Luana Evangelista Santos,Natanael Antonio |
dc.subject.por.fl_str_mv |
Contrast sensitivity Color confusion axles Leprosy |
topic |
Contrast sensitivity Color confusion axles Leprosy |
description |
Abstract The aim of this study was to analyze the contrast sensitivity of spatial luminance and the color discrimination thresholds of the protan, deutan, and tritan axes of people with leprosy. This study included 8 subjects with leprosy (M = 4, W = 4, M = 33.38 ± 8.7) and 8 healthy subjects (M = 4, W = 4, M = 30.89 ± 5.8). The contrast sensitivity was evaluated by the Metropsis software version 11.0 with vertical sinusoidal grids of frequencies of 0.2, 0.5, 1, 5, 10, and 16 cycles per degree of visual angle (cpd) and color vision by the desaturated Lanthony D15 tests and the trivector and ellipse protocols of the Cambridge Color Test. The results showed significant differences between the groups in the processing of spatial frequencies of 0.2 (U = 14; p = .018); 5.0 (U = 45.0; p = .001); 10.0 (U = 45.0; p = .001), and 16.0 (U = 45.0; p = .001) cpd. The difference in color recognition through D15d (U = 4.0; p = .002). Ellipse 2 (U = 10.0; p = .012) and ellipse 3 (U = 9.0; p = .009) were discriminated against. Overall, the results indicate that leprosy changes the visual processing of low, medium, and high spatial frequencies, as well as the sensitivity of the short wavelength (tritan line of confusion) and long (protan line of confusion) cones. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722020000100213 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722020000100213 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1186/s41155-020-00153-w |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Curso de Pós-Graduação em Psicologia da Universidade Federal do Rio Grande do Sul |
publisher.none.fl_str_mv |
Curso de Pós-Graduação em Psicologia da Universidade Federal do Rio Grande do Sul |
dc.source.none.fl_str_mv |
Psicologia: Reflexão e Crítica v.33 2020 reponame:Psicologia (Universidade Federal do Rio Grande do Sul. Online) instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Psicologia (Universidade Federal do Rio Grande do Sul. Online) |
collection |
Psicologia (Universidade Federal do Rio Grande do Sul. Online) |
repository.name.fl_str_mv |
Psicologia (Universidade Federal do Rio Grande do Sul. Online) - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
prc@springeropen.com |
_version_ |
1750134867072385024 |