Separable roles for attentional control sub-systems in reading tasks: a combined behavioral and fMRI study.
Separable roles for attentional control sub-systems in reading tasks: a combined behavioral and fMRI study.
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DOI：
10.1093/cercor/bht313
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发表时间：
2015-05
期刊：
影响因子：
--
通讯作者：
Schlaggar BL
中科院分区：
文献类型：
--
作者：
Ihnen SK;Petersen SE;Schlaggar BL
注意力控制对学习阅读和完成困难的阅读任务都很重要。先前的研究使用了两种机制来解释不同注意要求的阅读任务之间的反应时差异。本研究结合行为学和神经影像学的方法来检验以下假设：注意控制和阅读之间存在两种相互作用机制;这些机制在行为学和神经解剖学上都是分离的;这两种机制涉及功能上分离的控制系统。首先，RT证据被发现在支持的2-机制模型，证实了以前的研究。接下来，2组大脑区域被确定为显示功能性磁共振成像血氧水平依赖性活动，其映射到2机制的区别上。一组包括双侧扣带回-盖区和大多数右侧背侧注意区（CO/DA+）。这CO/DA+区域集显示响应特性一致的作用，在报告的处理途径（语音或词汇）是偏向于一个特定的试验。第二组主要由左侧额顶叶（FP）区域组成。其信号特性与反应检查中的作用一致。这些结果表明，在健康的年轻人的注意力控制的子组件与阅读过程的子组件相互作用。
Attentional control is important both for learning to read and for performing difficult reading tasks. A previous study invoked 2 mechanisms to explain reaction time (RT) differences between reading tasks with variable attentional demands. The present study combined behavioral and neuroimaging measures to test the hypotheses that there are 2 mechanisms of interaction between attentional control and reading; that these mechanisms are dissociable both behaviorally and neuro-anatomically; and that the 2 mechanisms involve functionally separable control systems. First, RT evidence was found in support of the 2-mechanism model, corroborating the previous study. Next, 2 sets of brain regions were identified as showing functional magnetic resonance imaging blood oxygen level-dependent activity that maps onto the 2-mechanism distinction. One set included bilateral Cingulo-opercular regions and mostly right-lateralized Dorsal Attention regions (CO/DA+). This CO/DA+ region set showed response properties consistent with a role in reporting which processing pathway (phonological or lexical) was biased for a particular trial. A second set was composed primarily of left-lateralized Frontal-parietal (FP) regions. Its signal properties were consistent with a role in response checking. These results demonstrate how the subcomponents of attentional control interact with subcomponents of reading processes in healthy young adults.
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影响因子：
4.3
作者：
BALOTA, DA;CHUMBLEY, JI
通讯作者：
CHUMBLEY, JI
影响因子：
4.8
作者：
Dietz, NAE;Jones, KM;Eden, GF
通讯作者：
Eden, GF
影响因子：
2.4
作者：
DENNIS, I;NEWSTEAD, SE
通讯作者：
NEWSTEAD, SE
影响因子：
4
作者：
Booth, JR;Perfetti, CA;MacWhinney, B
通讯作者：
MacWhinney, B
DOI：
10.3758/bf03204507
发表时间：
1993-05-01
期刊：
BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS
影响因子：
--
作者：
COHEN, J;MACWHINNEY, B;PROVOST, J
通讯作者：
PROVOST, J