Spatial-simultaneous and spatial-sequential working memory in individuals with Down syndrome: The effect of configuration
Spatial-simultaneous and spatial-sequential working memory in individuals with Down syndrome: The effect of configuration
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DOI：
10.1016/j.ridd.2012.09.011
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发表时间：
2013-01-01
影响因子：
3.1
通讯作者：
Mammarella, Irene C.
中科院分区：
文献类型：
--
作者：
Carretti, Barbara;Lanfranchi, Silvia;Mammarella, Irene C.
早期的研究表明，唐氏综合征（DS）患者的视觉空间工作记忆（VSWM）比言语工作记忆（WM）保存得更好。出现了一些差异，但是，当VSWM的性能被分解成其各个组成部分，和最近的研究表明，空间同步组件的VSWM是更受损的空间顺序之一。当要回顾的信息是有结构的时，一次管理一个以上项目的困难也是显而易见的。为了进一步分析这个问题，我们通过比较一组DS个体和一组心智年龄相匹配的典型发育儿童的表现，研究了在空间-同时和空间-顺序任务中材料被结构化的优势。（同时与顺序）和配置类型结果表明，与TD儿童相比，DS儿童在空间-同时任务中较少利用模式配置;相比之下，两组在空间序列任务的模式配置上的表现没有差异。综合起来，这些结果证实了DS个体的VSWM空间同步成分的困难。支持区分该系统内的不同组件的重要性。研究结果进行了讨论的影响因素，这一特定的赤字。(C)2012爱思唯尔有限公司保留所有权利。
Earlier research showed that visuospatial working memory (VSWM) is better preserved in Down syndrome (DS) than verbal WM. Some differences emerged, however, when VSWM performance was broken down into its various components, and more recent studies revealed that the spatial-simultaneous component of VSWM is more impaired than the spatial-sequential one. The difficulty of managing more than one item at a time is also evident when the information to be recalled is structured. To further analyze this issue, we investigated the advantage of material being structured in spatial-simultaneous and spatial-sequential tasks by comparing the performance of a group of individuals with DS and a group of typically-developing children matched for mental age.Both groups were presented with VSWM tasks in which both the presentation format (simultaneous vs. sequential) and the type of configuration (pattern vs. random) were manipulated.Findings indicated that individuals with DS took less advantage of the pattern configuration in the spatial-simultaneous task than TD children; in contrast, the two groups' performance did not differ in the pattern configuration of the spatial-sequential task.Taken together, these results confirmed difficulties relating to the spatial-simultaneous component of VSWM in individuals with DS. supporting the importance of distinguishing between different components within this system. The findings are discussed in terms of factors influencing this specific deficit. (C) 2012 Elsevier Ltd. All rights reserved.