Multiple modes of clearing one's mind of current thoughts: Overlapping and distinct neural systems
Multiple modes of clearing one's mind of current thoughts: Overlapping and distinct neural systems
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DOI：
10.1016/j.neuropsychologia.2015.01.039
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发表时间：
2015-03-01
期刊：
影响因子：
2.6
通讯作者：
Burgess, Gregory C.
中科院分区：
文献类型：
--
作者：
Banich, Marie T.;Seghete, Kristen L. Mackiewicz;Burgess, Gregory C.
这项研究使用神经成像的力量来识别从工作记忆中移除信息的神经系统，这是一个棘手的问题，因为很难证实个人确实修改了自己的想法。为了克服这个问题，通过fMRI测量的大脑激活被评估为，当个体必须清除他们的大脑中所有的想法(全局清除)，清除他们的大脑中的特定想法(有针对性的清除)，或替换当前的想法(替换)，相对于在工作记忆中保持一个项目。在这些情况下，后部感觉区域的活动模式证实了对任务要求的遵从性。参与认知控制的大脑区域的层次结构，包括顶叶、背外侧前额叶和额叶极区，根据信息从工作记忆中移除的方式而不同程度地参与。此外，更难控制内部思维的人，在与认知控制相关的前额叶大脑区域，以及与内部语言相关的左侧前额叶区域，包括布罗卡区，表现出更大的活动。(C)2015爱思唯尔有限公司。保留所有权利。
This study used the power of neuroimaging to identify the neural systems that remove information from working memory, a thorny issue to examine because it is difficult to confirm that individuals have actually modified their thoughts. To overcome this problem, brain activation as measured via fMRI was assessed when individuals had to clear their mind of all thought (global clear), clear their mind of a particular thought (targeted clear), or replace the current thought (replace), relative to maintaining an item in working memory. The pattern of activity in posterior sensory regions across these conditions confirmed compliance with task demands. A hierarchy of brain regions involved in cognitive control, including parietal, dorsolateral prefrontal and frontopolar regions, were engaged to varying degrees depending on the manner in which information was removed from working memory. In addition, individuals with greater difficulty in controlling internal thoughts exhibited greater activity in prefrontal brain regions associated with cognitive control, as well as in left lateral prefrontal areas including Broca's area, which is associated with inner speech. (c) 2015 Elsevier Ltd. All rights reserved.