Abstract:
:Spatial working memory (WM) processing has 3 distinct phases: encoding, maintenance, and retrieval and its dysfunction is a core feature in schizophrenia. We examined phase-specific brain activations associated with spatial WM in first-degree relatives of schizophrenia (genetic high risk, GHR), ultra-high risk (UHR) subjects, patients with schizophrenia, and healthy controls. We used an event-related functional magnetic resonance imaging in 17 GHR subjects, 21 UHR subjects, 15 clinically stable patients with schizophrenia and 16 healthy controls, while subjects were performing a spatial delayed-response task. During the encoding phase, the GHR group showed increased activation in the fronto-parietal regions, whereas the UHR and schizophrenia groups showed significantly less activation in these regions than did the healthy control group. Especially, frontal activation was strongest in GHR subjects, followed by healthy controls, and occurred to a lesser degree in the UHR group, with the least activation occurring in the schizophrenia group. During the maintenance phase, the thalamus showed a differential activation, similar to frontal activation pattern during the encoding phase. During the retrieval phase, no prominent differential activations were found. Increased activations were observed in the superior temporal gyrus during the encoding and maintenance phases in the GHR, UHR, and schizophrenia groups relative to healthy controls. Our findings suggest that functional deficits associated with spatial WM processing emerge in the UHR before the onset of schizophrenia and compensatory neural processes exist in the GHR with genetic liability to schizophrenia.
journal_name
Schizophr Bulljournal_title
Schizophrenia bulletinauthors
Choi JS,Park JY,Jung MH,Jang JH,Kang DH,Jung WH,Han JY,Choi CH,Hong KS,Kwon JSdoi
10.1093/schbul/sbr038subject
Has Abstractpub_date
2012-11-01 00:00:00pages
1189-99issue
6eissn
0586-7614issn
1745-1701pii
sbr038journal_volume
38pub_type
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pub_type: 杂志文章,评审
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
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pub_type: 杂志文章,评审
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pub_type: 杂志文章,meta分析,评审
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2011-09-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 评论,杂志文章
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更新日期:2015-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a033343
更新日期:1998-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbr144
更新日期:2013-03-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbw183
更新日期:2017-07-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/7.4.571
更新日期:1981-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a006956
更新日期:2002-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbj056
更新日期:2006-04-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2008-05-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章,评审
doi:10.1093/oxfordjournals.schbul.a007011
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pub_type: 杂志文章,meta分析,评审
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更新日期:2013-03-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/19.3.579
更新日期:1993-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/sbm156
更新日期:2008-03-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbz140
更新日期:2020-07-08 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/sby172
更新日期:2019-09-11 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 临床试验,杂志文章
doi:10.1093/schbul/5.1.1
更新日期:1979-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/9.4.504
更新日期:1983-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/15.3.501
更新日期:1989-01-01 00:00:00
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journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbw065
更新日期:2016-11-01 00:00:00