Impaired performance in a working memory binding task in patients with schizophrenia

被引:56
作者
Burglen, F
Marczewski, P
Mitchell, KJ
van der Linden, M
Johnson, MK
Danion, JM
Salamé, P
机构
[1] Hop Civil, Dept Psychiat, INSERM, U 405, F-67091 Strasbourg, France
[2] Univ Liege, Liege, Belgium
[3] Yale Univ, Dept Psychol, New Haven, CT 06520 USA
[4] Univ Geneva, Geneva, Switzerland
关键词
schizophrenia; working memory; object; location; associations; memory binding;
D O I
10.1016/j.psychres.2003.12.014
中图分类号
R749 [精神病学];
学科分类号
100205 ;
摘要
This study investigated feature binding in a working memory task in patients with schizophrenia and in normal controls. Twenty-five patients and 25 controls participated. On each trial, three drawings of familiar objects were presented sequentially, each in a different cell of a 3 x 3 grid. In different blocks of trials, participants remembered either individual features (object and location conditions) or an object and its location (combination condition). The results showed that patients were slower and less accurate than controls under all conditions. Accuracy of both groups, was reduced in the combination condition relative to the single-feature conditions, but patients showed disproportionately poorer performance in the combination condition than in the object and location conditions. Thus, patients with schizophrenia exhibit deficits in working memory, particularly when the task requires binding objects to their locations. This finding demonstrates that processes that establish coherent and temporary episodic representations in working memory are impaired in schizophrenia. (C) 2003 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:247 / 255
页数:9
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