Role of the amygdala in the reinforcement omission effect
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Psychology & Neuroscience (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882012000200018 |
Resumo: | The reinforcement omission effect (ROE) has been attributed to both motivational and attentional consequences of surprising reinforcement omission. Recent evidence suggests that the basolateral complex of the amygdala is involved in motivational components related to reinforcement value, whereas the central nucleus of the amygdala is involved in the processing of the attentional consequences of surprise. This study was designed to verify whether the mechanisms involved in the ROE depend on the integrity of either the basolateral amygdala complex or central nucleus of the amygdala. The ROE was evaluated in rats with lesions of either the central nucleus or basolateral complex of the amygdala and trained on a fixed-interval schedule procedure (Experiment 1) and fixed-interval with limited hold signaled schedule procedure (Experiment 2). The results of Experiment 1 showed that sham-operated rats and rats with lesions of either the central nucleus or basolateral area displayed the ROE. In contrast, in Experiment 2, subjects with lesions of the central nucleus or basolateral complex of the amygdala exhibited a smaller ROE compared with sham-operated subjects. Thus, the effects of selective lesions of amygdala subregions on the ROE in rats depended on the training procedure. Furthermore, the absence of differences between the lesioned groups in either experiment did not allow the dissociation of attentional or motivational components of the ROE with functions of specific areas of the amygdala. Thus, results did not show a functional double-dissociation between the central nucleus and basolateral area in the ROE. |
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Role of the amygdala in the reinforcement omission effectreinforcement omission effectbasolateral amygdalacentral nucleus of the amygdalaoperant conditioningratThe reinforcement omission effect (ROE) has been attributed to both motivational and attentional consequences of surprising reinforcement omission. Recent evidence suggests that the basolateral complex of the amygdala is involved in motivational components related to reinforcement value, whereas the central nucleus of the amygdala is involved in the processing of the attentional consequences of surprise. This study was designed to verify whether the mechanisms involved in the ROE depend on the integrity of either the basolateral amygdala complex or central nucleus of the amygdala. The ROE was evaluated in rats with lesions of either the central nucleus or basolateral complex of the amygdala and trained on a fixed-interval schedule procedure (Experiment 1) and fixed-interval with limited hold signaled schedule procedure (Experiment 2). The results of Experiment 1 showed that sham-operated rats and rats with lesions of either the central nucleus or basolateral area displayed the ROE. In contrast, in Experiment 2, subjects with lesions of the central nucleus or basolateral complex of the amygdala exhibited a smaller ROE compared with sham-operated subjects. Thus, the effects of selective lesions of amygdala subregions on the ROE in rats depended on the training procedure. Furthermore, the absence of differences between the lesioned groups in either experiment did not allow the dissociation of attentional or motivational components of the ROE with functions of specific areas of the amygdala. Thus, results did not show a functional double-dissociation between the central nucleus and basolateral area in the ROE.Pontificia Universidade Católica do Rio de JaneiroUniversidade de BrasíliaUniversidade de São Paulo2012-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882012000200018Psychology & Neuroscience v.5 n.2 2012reponame:Psychology & Neuroscience (Online)instname:Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC)instacron:PUCRJ10.3922/j.psns.2012.2.18info:eu-repo/semantics/openAccessBueno,José Lino de OliveiraJudice-Daher,Danielle MarcilioTavares,Tatiane Ferreiraeng2013-04-19T00:00:00Zoai:scielo:S1983-32882012000200018Revistahttps://www.apa.org/pubs/journals/pnePRIhttps://old.scielo.br/oai/scielo-oai.phppsycneuro@psycneuro.org1983-32881984-3054opendoar:2013-04-19T00:00Psychology & Neuroscience (Online) - Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC)false |
dc.title.none.fl_str_mv |
Role of the amygdala in the reinforcement omission effect |
title |
Role of the amygdala in the reinforcement omission effect |
spellingShingle |
Role of the amygdala in the reinforcement omission effect Bueno,José Lino de Oliveira reinforcement omission effect basolateral amygdala central nucleus of the amygdala operant conditioning rat |
title_short |
Role of the amygdala in the reinforcement omission effect |
title_full |
Role of the amygdala in the reinforcement omission effect |
title_fullStr |
Role of the amygdala in the reinforcement omission effect |
title_full_unstemmed |
Role of the amygdala in the reinforcement omission effect |
title_sort |
Role of the amygdala in the reinforcement omission effect |
author |
Bueno,José Lino de Oliveira |
author_facet |
Bueno,José Lino de Oliveira Judice-Daher,Danielle Marcilio Tavares,Tatiane Ferreira |
author_role |
author |
author2 |
Judice-Daher,Danielle Marcilio Tavares,Tatiane Ferreira |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Bueno,José Lino de Oliveira Judice-Daher,Danielle Marcilio Tavares,Tatiane Ferreira |
dc.subject.por.fl_str_mv |
reinforcement omission effect basolateral amygdala central nucleus of the amygdala operant conditioning rat |
topic |
reinforcement omission effect basolateral amygdala central nucleus of the amygdala operant conditioning rat |
description |
The reinforcement omission effect (ROE) has been attributed to both motivational and attentional consequences of surprising reinforcement omission. Recent evidence suggests that the basolateral complex of the amygdala is involved in motivational components related to reinforcement value, whereas the central nucleus of the amygdala is involved in the processing of the attentional consequences of surprise. This study was designed to verify whether the mechanisms involved in the ROE depend on the integrity of either the basolateral amygdala complex or central nucleus of the amygdala. The ROE was evaluated in rats with lesions of either the central nucleus or basolateral complex of the amygdala and trained on a fixed-interval schedule procedure (Experiment 1) and fixed-interval with limited hold signaled schedule procedure (Experiment 2). The results of Experiment 1 showed that sham-operated rats and rats with lesions of either the central nucleus or basolateral area displayed the ROE. In contrast, in Experiment 2, subjects with lesions of the central nucleus or basolateral complex of the amygdala exhibited a smaller ROE compared with sham-operated subjects. Thus, the effects of selective lesions of amygdala subregions on the ROE in rats depended on the training procedure. Furthermore, the absence of differences between the lesioned groups in either experiment did not allow the dissociation of attentional or motivational components of the ROE with functions of specific areas of the amygdala. Thus, results did not show a functional double-dissociation between the central nucleus and basolateral area in the ROE. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-12-01 |
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=S1983-32882012000200018 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882012000200018 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.3922/j.psns.2012.2.18 |
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 |
Pontificia Universidade Católica do Rio de Janeiro Universidade de Brasília Universidade de São Paulo |
publisher.none.fl_str_mv |
Pontificia Universidade Católica do Rio de Janeiro Universidade de Brasília Universidade de São Paulo |
dc.source.none.fl_str_mv |
Psychology & Neuroscience v.5 n.2 2012 reponame:Psychology & Neuroscience (Online) instname:Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC) instacron:PUCRJ |
instname_str |
Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC) |
instacron_str |
PUCRJ |
institution |
PUCRJ |
reponame_str |
Psychology & Neuroscience (Online) |
collection |
Psychology & Neuroscience (Online) |
repository.name.fl_str_mv |
Psychology & Neuroscience (Online) - Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC) |
repository.mail.fl_str_mv |
psycneuro@psycneuro.org |
_version_ |
1754821072866246656 |