Distraction and target selection in the brain: An fMRI study
Distraction and target selection in the brain: An fMRI study
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DOI：
10.1016/j.neuropsychologia.2010.07.019
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发表时间：
2010-09-01
期刊：
影响因子：
2.6
通讯作者：
Schuboe, Anna
中科院分区：
文献类型：
--
作者：
Akyurek, Elkan G.;Vallines, Ignacio;Schuboe, Anna
要成功地参加，说明当前相关的内容是必要的，但还不够。环境中也存在的无关刺激必须被识别出来，同时被过滤掉。使用功能磁共振成像，我们发现，在顶叶，枕叶和颞叶皮层的后部大脑区域被招募，以忽略分散注意力的视觉刺激，而相关刺激的规格和选择与额叶皮层和海马区的差异活动。因此，结果表明，相关对象的选择可以从解剖学上分离的处理竞争无关的对象。顶叶和枕叶皮层在处理分心时的参与增加，而额叶皮层在目标指定时的参与增加，这两者之间的分离为注意力模型提供了神经生理学支持，使这种功能区分。(C)2010爱思唯尔有限公司版权所有。
To attend successfully, a specification of what is currently relevant is necessary, but not sufficient. Irrelevant stimuli that are also present in the environment must be recognized as such and filtered out at the same time. Using functional magnetic resonance imaging, we showed that posterior brain regions in parietal, occipital and temporal cortex are recruited in order to ignore distracting visual stimuli, while the specification and selection of relevant stimuli is associated with differential activity in frontal cortex and hippocampal areas instead. The results thus suggest that the selection of relevant objects can be anatomically dissociated from the handling of competing irrelevant objects. The dissociation between the increased involvement of parietal and occipital cortex in handling distraction on one hand, and that of frontal cortex in target specification on the other provides neurophysiological support for models of attention that make this functional distinction. (C) 2010 Elsevier Ltd. All rights reserved.