Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Psicologia (Universidade Federal do Rio Grande do Sul. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722016000105106 |
Resumo: | Abstract The aim of this study was to measure visual contrast sensitivity (CS) of luminance using vertical sinusoidal gratings with spatial frequencies of 0.6, 2.5, 5.0 and 20.0 cycles per degree of visual angle in chronic alcoholics in abstinence period. The participants were 20 volunteers (26–59 years of age) divided into two groups: the study group (SG) consisted of 10 volunteers with a clinical history of chronic alcoholism abstinence and the control group (CG) consisted of 10 healthy volunteers. Each group had five female and five male participants. All participants had normal or corrected visual acuity and were free of identifiable diseases. The psychophysical method of forced choice between two temporal alternatives (2AFC) was used to measure visual CS of luminance of 41.2 cd/m2. The results showed significant differences between groups for all spatial frequencies tested (p< 0.001). These results suggest alterations in the visual perception related to chronic alcohol consumption even after years of abstinence. |
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Psicologia (Universidade Federal do Rio Grande do Sul. Online) |
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Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratingsAlcoholismSpatial visionVisual contrastAbstract The aim of this study was to measure visual contrast sensitivity (CS) of luminance using vertical sinusoidal gratings with spatial frequencies of 0.6, 2.5, 5.0 and 20.0 cycles per degree of visual angle in chronic alcoholics in abstinence period. The participants were 20 volunteers (26–59 years of age) divided into two groups: the study group (SG) consisted of 10 volunteers with a clinical history of chronic alcoholism abstinence and the control group (CG) consisted of 10 healthy volunteers. Each group had five female and five male participants. All participants had normal or corrected visual acuity and were free of identifiable diseases. The psychophysical method of forced choice between two temporal alternatives (2AFC) was used to measure visual CS of luminance of 41.2 cd/m2. The results showed significant differences between groups for all spatial frequencies tested (p< 0.001). These results suggest alterations in the visual perception related to chronic alcohol consumption even after years of abstinence.Curso de Pós-Graduação em Psicologia da Universidade Federal do Rio Grande do Sul2016-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722016000105106Psicologia: Reflexão e Crítica v.29 2016reponame:Psicologia (Universidade Federal do Rio Grande do Sul. Online)instname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGS10.1186/s41155-016-0023-yinfo:eu-repo/semantics/openAccessCruz,Éllen Dias Nicácio daAndrade,Michael Jackson Oliveira deCavalcanti-Gaudino,Melyssa KellyaneNogueira,Renata Maria Toscano Barreto LyraSantos,Natanael Antonio doseng2016-06-17T00:00:00Zoai:scielo:S0102-79722016000105106Revistahttps://www.scielo.br/j/prc/ONGhttps://old.scielo.br/oai/scielo-oai.phpprc@springeropen.com1678-71530102-7972opendoar:2016-06-17T00:00Psicologia (Universidade Federal do Rio Grande do Sul. Online) - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.none.fl_str_mv |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings |
title |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings |
spellingShingle |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings Cruz,Éllen Dias Nicácio da Alcoholism Spatial vision Visual contrast |
title_short |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings |
title_full |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings |
title_fullStr |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings |
title_full_unstemmed |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings |
title_sort |
Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings |
author |
Cruz,Éllen Dias Nicácio da |
author_facet |
Cruz,Éllen Dias Nicácio da Andrade,Michael Jackson Oliveira de Cavalcanti-Gaudino,Melyssa Kellyane Nogueira,Renata Maria Toscano Barreto Lyra Santos,Natanael Antonio dos |
author_role |
author |
author2 |
Andrade,Michael Jackson Oliveira de Cavalcanti-Gaudino,Melyssa Kellyane Nogueira,Renata Maria Toscano Barreto Lyra Santos,Natanael Antonio dos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Cruz,Éllen Dias Nicácio da Andrade,Michael Jackson Oliveira de Cavalcanti-Gaudino,Melyssa Kellyane Nogueira,Renata Maria Toscano Barreto Lyra Santos,Natanael Antonio dos |
dc.subject.por.fl_str_mv |
Alcoholism Spatial vision Visual contrast |
topic |
Alcoholism Spatial vision Visual contrast |
description |
Abstract The aim of this study was to measure visual contrast sensitivity (CS) of luminance using vertical sinusoidal gratings with spatial frequencies of 0.6, 2.5, 5.0 and 20.0 cycles per degree of visual angle in chronic alcoholics in abstinence period. The participants were 20 volunteers (26–59 years of age) divided into two groups: the study group (SG) consisted of 10 volunteers with a clinical history of chronic alcoholism abstinence and the control group (CG) consisted of 10 healthy volunteers. Each group had five female and five male participants. All participants had normal or corrected visual acuity and were free of identifiable diseases. The psychophysical method of forced choice between two temporal alternatives (2AFC) was used to measure visual CS of luminance of 41.2 cd/m2. The results showed significant differences between groups for all spatial frequencies tested (p< 0.001). These results suggest alterations in the visual perception related to chronic alcohol consumption even after years of abstinence. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 |
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=S0102-79722016000105106 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722016000105106 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1186/s41155-016-0023-y |
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.29 2016 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_ |
1750134866585845760 |