Dissociated mechanisms of extracting perceptual information into visual working memory.

<h4>Background</h4>The processing mechanisms of visual working memory (VWM) have been extensively explored in the recent decade. However, how the perceptual information is extracted into VWM remains largely unclear. The current study investigated this issue by testing whether the percept...

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Autores principales:	Zaifeng Gao, Jie Li, Jun Yin, Mowei Shen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cd5923eee017455791050446a8df7965
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spelling	oai:doaj.org-article:cd5923eee017455791050446a8df79652021-11-18T07:01:52ZDissociated mechanisms of extracting perceptual information into visual working memory.1932-620310.1371/journal.pone.0014273https://doaj.org/article/cd5923eee017455791050446a8df79652010-12-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21170315/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>The processing mechanisms of visual working memory (VWM) have been extensively explored in the recent decade. However, how the perceptual information is extracted into VWM remains largely unclear. The current study investigated this issue by testing whether the perceptual information was extracted into VWM via an integrated-object manner so that all the irrelevant information would be extracted (object hypothesis), or via a feature-based manner so that only the target-relevant information would be extracted (feature hypothesis), or via an analogous processing manner as that in visual perception (analogy hypothesis).<h4>Methodology/principal findings</h4>High-discriminable information which is processed at the parallel stage of visual perception and fine-grained information which is processed via focal attention were selected as the representatives of perceptual information. The analogy hypothesis predicted that whereas high-discriminable information is extracted into VWM automatically, fine-grained information will be extracted only if it is task-relevant. By manipulating the information type of the irrelevant dimension in a change-detection task, we found that the performance was affected and the ERP component N270 was enhanced if a change between the probe and the memorized stimulus consisted of irrelevant high-discriminable information, but not if it consisted of irrelevant fine-grained information.<h4>Conclusions/significance</h4>We conclude that dissociated extraction mechanisms exist in VWM for information resolved via dissociated processes in visual perception (at least for the information tested in the current study), supporting the analogy hypothesis.Zaifeng GaoJie LiJun YinMowei ShenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 12, p e14273 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zaifeng Gao Jie Li Jun Yin Mowei Shen Dissociated mechanisms of extracting perceptual information into visual working memory.
description	<h4>Background</h4>The processing mechanisms of visual working memory (VWM) have been extensively explored in the recent decade. However, how the perceptual information is extracted into VWM remains largely unclear. The current study investigated this issue by testing whether the perceptual information was extracted into VWM via an integrated-object manner so that all the irrelevant information would be extracted (object hypothesis), or via a feature-based manner so that only the target-relevant information would be extracted (feature hypothesis), or via an analogous processing manner as that in visual perception (analogy hypothesis).<h4>Methodology/principal findings</h4>High-discriminable information which is processed at the parallel stage of visual perception and fine-grained information which is processed via focal attention were selected as the representatives of perceptual information. The analogy hypothesis predicted that whereas high-discriminable information is extracted into VWM automatically, fine-grained information will be extracted only if it is task-relevant. By manipulating the information type of the irrelevant dimension in a change-detection task, we found that the performance was affected and the ERP component N270 was enhanced if a change between the probe and the memorized stimulus consisted of irrelevant high-discriminable information, but not if it consisted of irrelevant fine-grained information.<h4>Conclusions/significance</h4>We conclude that dissociated extraction mechanisms exist in VWM for information resolved via dissociated processes in visual perception (at least for the information tested in the current study), supporting the analogy hypothesis.
format	article
author	Zaifeng Gao Jie Li Jun Yin Mowei Shen
author_facet	Zaifeng Gao Jie Li Jun Yin Mowei Shen
author_sort	Zaifeng Gao
title	Dissociated mechanisms of extracting perceptual information into visual working memory.
title_short	Dissociated mechanisms of extracting perceptual information into visual working memory.
title_full	Dissociated mechanisms of extracting perceptual information into visual working memory.
title_fullStr	Dissociated mechanisms of extracting perceptual information into visual working memory.
title_full_unstemmed	Dissociated mechanisms of extracting perceptual information into visual working memory.
title_sort	dissociated mechanisms of extracting perceptual information into visual working memory.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/cd5923eee017455791050446a8df7965
work_keys_str_mv	AT zaifenggao dissociatedmechanismsofextractingperceptualinformationintovisualworkingmemory AT jieli dissociatedmechanismsofextractingperceptualinformationintovisualworkingmemory AT junyin dissociatedmechanismsofextractingperceptualinformationintovisualworkingmemory AT moweishen dissociatedmechanismsofextractingperceptualinformationintovisualworkingmemory
_version_	1718424071237009408

Dissociated mechanisms of extracting perceptual information into visual working memory.

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