Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies

Autores
Samame, Cecilia; Szmulewicz, A. G.; Valerio, Marina Paula; Martino, Diego Javier; Strejilevich, S. A.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background: Neuropsychological deficits are present in both major depression and bipolar disorder. So far, however, reports directly comparing these mood disorders with regard to cognitive outcomes have been scant and yielded inconsistent results. This work aims to combine the findings of comparative studies of cognition in major depression and bipolar disorder in order to explore whether these neuropsychiatric conditions present with distinct cognitive features. Methods: The main online databases were extensively searched to retrieve reports assessing neurocognitive functioning in two groups of mood disorder patients, one with major depressive disorder and another with bipolar disorder, both in the same phase of illness. Between-group effect sizes for cognitive variables were obtained from selected studies and pooled by means of meta-analytic procedures. Results: During euthymia, a significant overall effect size (Hedges’g = 0.64, P < 0.001) favoring major depressive disorder was found for verbal memory as assessed with list learning tests, whereas no significant between-group differences were found for the remaining variables analyzed. During depressive episodes, similar cognitive outcomes were observed between groups. Conclusion: At present, it is not possible to postulate specific neuropsychological profiles for major depression and bipolar disorder in light of available evidence. It remains to be ascertained whether the differences found for verbal memory constitute an expression of distinct underlying mechanisms or whether they are best explained by sample characteristics or differential exposure to variables with a negative impact on cognition.
Fil: Samame, Cecilia. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Universidad de Buenos Aires. Facultad de Psicología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Szmulewicz, A. G.. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Gobierno de la Ciudad de Buenos Aires. Hospital de Emergencias Psiquiáicas "Torcuato de Alvear"; Argentina
Fil: Valerio, Marina Paula. Gobierno de la Ciudad de Buenos Aires. Hospital de Emergencias Psiquiáicas "Torcuato de Alvear"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Martino, Diego Javier. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Strejilevich, S. A.. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; Argentina
Materia
Bipolar Disorder
Cognitive Functioning
Major Depressive Disorder
Meta-Analysis
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/59262
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/59262
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studiesSamame, CeciliaSzmulewicz, A. G.Valerio, Marina PaulaMartino, Diego JavierStrejilevich, S. A.Bipolar DisorderCognitive FunctioningMajor Depressive DisorderMeta-Analysishttps://purl.org/becyt/ford/3.2https://purl.org/becyt/ford/3Background: Neuropsychological deficits are present in both major depression and bipolar disorder. So far, however, reports directly comparing these mood disorders with regard to cognitive outcomes have been scant and yielded inconsistent results. This work aims to combine the findings of comparative studies of cognition in major depression and bipolar disorder in order to explore whether these neuropsychiatric conditions present with distinct cognitive features. Methods: The main online databases were extensively searched to retrieve reports assessing neurocognitive functioning in two groups of mood disorder patients, one with major depressive disorder and another with bipolar disorder, both in the same phase of illness. Between-group effect sizes for cognitive variables were obtained from selected studies and pooled by means of meta-analytic procedures. Results: During euthymia, a significant overall effect size (Hedges’g = 0.64, P < 0.001) favoring major depressive disorder was found for verbal memory as assessed with list learning tests, whereas no significant between-group differences were found for the remaining variables analyzed. During depressive episodes, similar cognitive outcomes were observed between groups. Conclusion: At present, it is not possible to postulate specific neuropsychological profiles for major depression and bipolar disorder in light of available evidence. It remains to be ascertained whether the differences found for verbal memory constitute an expression of distinct underlying mechanisms or whether they are best explained by sample characteristics or differential exposure to variables with a negative impact on cognition.Fil: Samame, Cecilia. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Universidad de Buenos Aires. Facultad de Psicología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Szmulewicz, A. G.. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Gobierno de la Ciudad de Buenos Aires. Hospital de Emergencias Psiquiáicas "Torcuato de Alvear"; ArgentinaFil: Valerio, Marina Paula. Gobierno de la Ciudad de Buenos Aires. Hospital de Emergencias Psiquiáicas "Torcuato de Alvear"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Martino, Diego Javier. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Strejilevich, S. A.. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; ArgentinaElsevier Masson2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/59262Samame, Cecilia; Szmulewicz, A. G.; Valerio, Marina Paula; Martino, Diego Javier; Strejilevich, S. A.; Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies; Elsevier Masson; European Psychiatry; 39; 1-2017; 17-260924-9338CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.eurpsy.2016.06.002info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0924933816300670info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:20Zoai:ri.conicet.gov.ar:11336/59262instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:44:20.772CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
title Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
spellingShingle Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
Samame, Cecilia
Bipolar Disorder
Cognitive Functioning
Major Depressive Disorder
Meta-Analysis
title_short Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
title_full Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
title_fullStr Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
title_full_unstemmed Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
title_sort Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies
dc.creator.none.fl_str_mv Samame, Cecilia
Szmulewicz, A. G.
Valerio, Marina Paula
Martino, Diego Javier
Strejilevich, S. A.
author Samame, Cecilia
author_facet Samame, Cecilia
Szmulewicz, A. G.
Valerio, Marina Paula
Martino, Diego Javier
Strejilevich, S. A.
author_role author
author2 Szmulewicz, A. G.
Valerio, Marina Paula
Martino, Diego Javier
Strejilevich, S. A.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Bipolar Disorder
Cognitive Functioning
Major Depressive Disorder
Meta-Analysis
topic Bipolar Disorder
Cognitive Functioning
Major Depressive Disorder
Meta-Analysis
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.2
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Background: Neuropsychological deficits are present in both major depression and bipolar disorder. So far, however, reports directly comparing these mood disorders with regard to cognitive outcomes have been scant and yielded inconsistent results. This work aims to combine the findings of comparative studies of cognition in major depression and bipolar disorder in order to explore whether these neuropsychiatric conditions present with distinct cognitive features. Methods: The main online databases were extensively searched to retrieve reports assessing neurocognitive functioning in two groups of mood disorder patients, one with major depressive disorder and another with bipolar disorder, both in the same phase of illness. Between-group effect sizes for cognitive variables were obtained from selected studies and pooled by means of meta-analytic procedures. Results: During euthymia, a significant overall effect size (Hedges’g = 0.64, P < 0.001) favoring major depressive disorder was found for verbal memory as assessed with list learning tests, whereas no significant between-group differences were found for the remaining variables analyzed. During depressive episodes, similar cognitive outcomes were observed between groups. Conclusion: At present, it is not possible to postulate specific neuropsychological profiles for major depression and bipolar disorder in light of available evidence. It remains to be ascertained whether the differences found for verbal memory constitute an expression of distinct underlying mechanisms or whether they are best explained by sample characteristics or differential exposure to variables with a negative impact on cognition.
Fil: Samame, Cecilia. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Universidad de Buenos Aires. Facultad de Psicología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Szmulewicz, A. G.. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Gobierno de la Ciudad de Buenos Aires. Hospital de Emergencias Psiquiáicas "Torcuato de Alvear"; Argentina
Fil: Valerio, Marina Paula. Gobierno de la Ciudad de Buenos Aires. Hospital de Emergencias Psiquiáicas "Torcuato de Alvear"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Martino, Diego Javier. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Strejilevich, S. A.. Universidad Favaloro. Facultad de Medicina. Instituto de Neurociencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Neurociencia Cognitiva. Fundación Favaloro. Instituto de Neurociencia Cognitiva; Argentina
description Background: Neuropsychological deficits are present in both major depression and bipolar disorder. So far, however, reports directly comparing these mood disorders with regard to cognitive outcomes have been scant and yielded inconsistent results. This work aims to combine the findings of comparative studies of cognition in major depression and bipolar disorder in order to explore whether these neuropsychiatric conditions present with distinct cognitive features. Methods: The main online databases were extensively searched to retrieve reports assessing neurocognitive functioning in two groups of mood disorder patients, one with major depressive disorder and another with bipolar disorder, both in the same phase of illness. Between-group effect sizes for cognitive variables were obtained from selected studies and pooled by means of meta-analytic procedures. Results: During euthymia, a significant overall effect size (Hedges’g = 0.64, P < 0.001) favoring major depressive disorder was found for verbal memory as assessed with list learning tests, whereas no significant between-group differences were found for the remaining variables analyzed. During depressive episodes, similar cognitive outcomes were observed between groups. Conclusion: At present, it is not possible to postulate specific neuropsychological profiles for major depression and bipolar disorder in light of available evidence. It remains to be ascertained whether the differences found for verbal memory constitute an expression of distinct underlying mechanisms or whether they are best explained by sample characteristics or differential exposure to variables with a negative impact on cognition.
publishDate 2017
dc.date.none.fl_str_mv 2017-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/59262
Samame, Cecilia; Szmulewicz, A. G.; Valerio, Marina Paula; Martino, Diego Javier; Strejilevich, S. A.; Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies; Elsevier Masson; European Psychiatry; 39; 1-2017; 17-26
0924-9338
CONICET Digital
CONICET
url http://hdl.handle.net/11336/59262
identifier_str_mv Samame, Cecilia; Szmulewicz, A. G.; Valerio, Marina Paula; Martino, Diego Javier; Strejilevich, S. A.; Are major depression and bipolar disorder neuropsychologically distinct? A meta-analysis of comparative studies; Elsevier Masson; European Psychiatry; 39; 1-2017; 17-26
0924-9338
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.eurpsy.2016.06.002
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0924933816300670
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Masson
publisher.none.fl_str_mv Elsevier Masson
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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