Effects of acute stress on learning and memory processes of malnourished rats
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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=S0102-79722014000400784 |
Resumo: | The aim of the study was to investigate the effects of acute stress on the processes of learning and memory in malnourished rats tested in the Morris water maze. The animals were divided into eight groups according to nutritional status (malnourished or well nourished) and stress (stressed or unstressed). In Experiment I the animals were subjected to immobilization stress procedure before the learning session and in Experiment II after the learning sessions. The test consisted of two daily sessions, and a memory test after four weeks. There was loss of learning and memory in malnourished rats. In Experiment I the malnourished group was positively affected by acute stress, with significant improvement of performance. No effects of stress on the animals' performance in Experiment II were observed. In the memory test, the malnourished rats showed deficits in consolidation and recall, regardless of the occurrence of stress. The stress imposed 24 hours before the learning task improved performance of malnourished animals with a protective effect of stress. However there was no improvement in the processes of retention or recall from memory (previously learned information) assessed four weeks later, during the memory retention test. |
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Psicologia (Universidade Federal do Rio Grande do Sul. Online) |
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Effects of acute stress on learning and memory processes of malnourished ratsProtein malnutritionacute stresslearningspatial memoryThe aim of the study was to investigate the effects of acute stress on the processes of learning and memory in malnourished rats tested in the Morris water maze. The animals were divided into eight groups according to nutritional status (malnourished or well nourished) and stress (stressed or unstressed). In Experiment I the animals were subjected to immobilization stress procedure before the learning session and in Experiment II after the learning sessions. The test consisted of two daily sessions, and a memory test after four weeks. There was loss of learning and memory in malnourished rats. In Experiment I the malnourished group was positively affected by acute stress, with significant improvement of performance. No effects of stress on the animals' performance in Experiment II were observed. In the memory test, the malnourished rats showed deficits in consolidation and recall, regardless of the occurrence of stress. The stress imposed 24 hours before the learning task improved performance of malnourished animals with a protective effect of stress. However there was no improvement in the processes of retention or recall from memory (previously learned information) assessed four weeks later, during the memory retention test.Curso de Pós-Graduação em Psicologia da Universidade Federal do Rio Grande do Sul2014-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722014000400784Psicologia: Reflexão e Crítica v.27 n.4 2014reponame:Psicologia (Universidade Federal do Rio Grande do Sul. Online)instname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGS10.1590/1678-7153.201427419info:eu-repo/semantics/openAccessVales,Lucas Duarte Ferreira Manhas dosFukuda,Marisa Tomoe HebiharaAlmeida,Sebastião Sousaeng2015-09-21T00:00:00Zoai:scielo:S0102-79722014000400784Revistahttps://www.scielo.br/j/prc/ONGhttps://old.scielo.br/oai/scielo-oai.phpprc@springeropen.com1678-71530102-7972opendoar:2015-09-21T00:00Psicologia (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 acute stress on learning and memory processes of malnourished rats |
title |
Effects of acute stress on learning and memory processes of malnourished rats |
spellingShingle |
Effects of acute stress on learning and memory processes of malnourished rats Vales,Lucas Duarte Ferreira Manhas dos Protein malnutrition acute stress learning spatial memory |
title_short |
Effects of acute stress on learning and memory processes of malnourished rats |
title_full |
Effects of acute stress on learning and memory processes of malnourished rats |
title_fullStr |
Effects of acute stress on learning and memory processes of malnourished rats |
title_full_unstemmed |
Effects of acute stress on learning and memory processes of malnourished rats |
title_sort |
Effects of acute stress on learning and memory processes of malnourished rats |
author |
Vales,Lucas Duarte Ferreira Manhas dos |
author_facet |
Vales,Lucas Duarte Ferreira Manhas dos Fukuda,Marisa Tomoe Hebihara Almeida,Sebastião Sousa |
author_role |
author |
author2 |
Fukuda,Marisa Tomoe Hebihara Almeida,Sebastião Sousa |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Vales,Lucas Duarte Ferreira Manhas dos Fukuda,Marisa Tomoe Hebihara Almeida,Sebastião Sousa |
dc.subject.por.fl_str_mv |
Protein malnutrition acute stress learning spatial memory |
topic |
Protein malnutrition acute stress learning spatial memory |
description |
The aim of the study was to investigate the effects of acute stress on the processes of learning and memory in malnourished rats tested in the Morris water maze. The animals were divided into eight groups according to nutritional status (malnourished or well nourished) and stress (stressed or unstressed). In Experiment I the animals were subjected to immobilization stress procedure before the learning session and in Experiment II after the learning sessions. The test consisted of two daily sessions, and a memory test after four weeks. There was loss of learning and memory in malnourished rats. In Experiment I the malnourished group was positively affected by acute stress, with significant improvement of performance. No effects of stress on the animals' performance in Experiment II were observed. In the memory test, the malnourished rats showed deficits in consolidation and recall, regardless of the occurrence of stress. The stress imposed 24 hours before the learning task improved performance of malnourished animals with a protective effect of stress. However there was no improvement in the processes of retention or recall from memory (previously learned information) assessed four weeks later, during the memory retention test. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-01 |
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=S0102-79722014000400784 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-79722014000400784 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-7153.201427419 |
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.27 n.4 2014 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_ |
1750134865750130688 |