Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.

Although impairments in working memory (WM) are well documented in schizophrenia, the specific factors that cause these deficits are poorly understood. In this study, we hypothesized that a heightened susceptibility to attentional capture at an early stage of visual processing would result in workin...

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Autores principales:	Jutta S Mayer, Keisuke Fukuda, Edward K Vogel, Sohee Park
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/725b09bf043047d6848b307a94b31138
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spelling	oai:doaj.org-article:725b09bf043047d6848b307a94b311382021-11-18T08:09:09ZImpaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.1932-620310.1371/journal.pone.0048586https://doaj.org/article/725b09bf043047d6848b307a94b311382012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23152783/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Although impairments in working memory (WM) are well documented in schizophrenia, the specific factors that cause these deficits are poorly understood. In this study, we hypothesized that a heightened susceptibility to attentional capture at an early stage of visual processing would result in working memory encoding problems. 30 patients with schizophrenia and 28 demographically matched healthy participants were presented with a search array and asked to report the orientation of the target stimulus. In some of the trials, a flanker stimulus preceded the search array that either matched the color of the target (relevant-flanker capture) or appeared in a different color (irrelevant-flanker capture). Working memory capacity was determined in each individual using the visual change detection paradigm. Patients needed considerably more time to find the target in the no-flanker condition. After adjusting the individual exposure time, both groups showed equivalent capture costs in the irrelevant-flanker condition. However, in the relevant-flanker condition, capture costs were increased in patients compared to controls when the stimulus onset asynchrony between the flanker and the search array was high. Moreover, the increase in relevant capture costs correlated negatively with working memory capacity. This study demonstrates preserved stimulus-driven attentional capture but impaired contingent attentional capture associated with low working memory capacity in schizophrenia. These findings suggest a selective impairment of top-down attentional control in schizophrenia, which may impair working memory encoding.Jutta S MayerKeisuke FukudaEdward K VogelSohee ParkPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e48586 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jutta S Mayer Keisuke Fukuda Edward K Vogel Sohee Park Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.
description	Although impairments in working memory (WM) are well documented in schizophrenia, the specific factors that cause these deficits are poorly understood. In this study, we hypothesized that a heightened susceptibility to attentional capture at an early stage of visual processing would result in working memory encoding problems. 30 patients with schizophrenia and 28 demographically matched healthy participants were presented with a search array and asked to report the orientation of the target stimulus. In some of the trials, a flanker stimulus preceded the search array that either matched the color of the target (relevant-flanker capture) or appeared in a different color (irrelevant-flanker capture). Working memory capacity was determined in each individual using the visual change detection paradigm. Patients needed considerably more time to find the target in the no-flanker condition. After adjusting the individual exposure time, both groups showed equivalent capture costs in the irrelevant-flanker condition. However, in the relevant-flanker condition, capture costs were increased in patients compared to controls when the stimulus onset asynchrony between the flanker and the search array was high. Moreover, the increase in relevant capture costs correlated negatively with working memory capacity. This study demonstrates preserved stimulus-driven attentional capture but impaired contingent attentional capture associated with low working memory capacity in schizophrenia. These findings suggest a selective impairment of top-down attentional control in schizophrenia, which may impair working memory encoding.
format	article
author	Jutta S Mayer Keisuke Fukuda Edward K Vogel Sohee Park
author_facet	Jutta S Mayer Keisuke Fukuda Edward K Vogel Sohee Park
author_sort	Jutta S Mayer
title	Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.
title_short	Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.
title_full	Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.
title_fullStr	Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.
title_full_unstemmed	Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.
title_sort	impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/725b09bf043047d6848b307a94b31138
work_keys_str_mv	AT juttasmayer impairedcontingentattentionalcapturepredictsreducedworkingmemorycapacityinschizophrenia AT keisukefukuda impairedcontingentattentionalcapturepredictsreducedworkingmemorycapacityinschizophrenia AT edwardkvogel impairedcontingentattentionalcapturepredictsreducedworkingmemorycapacityinschizophrenia AT soheepark impairedcontingentattentionalcapturepredictsreducedworkingmemorycapacityinschizophrenia
_version_	1718422174584274944

Impaired contingent attentional capture predicts reduced working memory capacity in schizophrenia.

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