THE ANTERIOR CINGULATE CORTEX MEDIATES PROCESSING SELECTION IN THE STROOP ATTENTIONAL CONFLICT PARADIGM
THE ANTERIOR CINGULATE CORTEX MEDIATES PROCESSING SELECTION IN THE STROOP ATTENTIONAL CONFLICT PARADIGM
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DOI：
10.1073/pnas.87.1.256
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发表时间：
1990-01-01
影响因子：
11.1
通讯作者：
RAICHLE, ME
中科院分区：
文献类型：
--
作者：
PARDO, JV;PARDO, PJ;RAICHLE, ME
区域脑血流量，局部神经元活动的指数，使用正电子发射断层扫描（PET）在8名健康的右利手受试者的经典Stroop颜色/文字任务的性能进行了测量。在第一种情况下，受试者说出视频显示器上显示的单词的颜色。所有单词都是与所呈现的颜色一致的颜色名称（例如，名词“红色”显示为红色）。在第二种情况下，受试者还可以说出显示器上显示的单词的颜色。然而，在这些试验中，所有单词都是与当前颜色不一致的颜色名称（例如，名词“红色”显示为绿色）。这两种情况下大脑活动的差异（即，不一致减去一致）可以揭示参与阅读单词的习惯性反应与命名单词颜色的任务需求之间的冲突的注意力介导的解决的脑系统。SBD.即，Stroop干扰效应最强烈的反应发生在前扣带皮层。在左侧运动前皮质、左侧中央后皮质、左侧壳核、辅助运动区、右侧上级颞回和双侧纹周皮质中观察到其他反应。这些数据支持前扣带皮层在注意处理中的作用，通过选择和招聘的处理中心适合于任务执行。此外，广泛分布的激活区域网络表明，Stroop干扰效应不能简单地解释刺激编码或反应干扰。
Regional cerebral blood flow, an index of local neuronal activity, was measured using positron emission tomography (PET) during the performance of the classic Stroop color/word task in eight healthy right-handed subjects. In the first condition of this paradigm, subjects name the color of the words presented on a video monitor. All the words are the color names congruent to the color presented (e.g., the noun "red" displayed in red color). In the second condition, subjects also name the color of the words presented on the monitor. However, during these trials all words are color names incongruent to the color present (e.g., the noun "red" displayed in green color). The difference in brain activity between these two conditions (i.e., incongruent minus congruent) could reveal brain systems involved in the attentionally mediated resolution of the conflict between the habitual response of reading words vs. the task demands of naming the color of the words.sbd.i.e., the Stroop interference effect. The most robust responses occurred in the anterior cingulate cortex. Other responses noted were in the left premotor cortex, left postcentral cortex, left putamen, supplementary motor area, right superior temporal gyrus, and bilateral peristriate cortices. These data provide support for the role of the anterior cingulate cortex in attentional processing through the selection and recruitment of processing centers appropriate for task execution. Furthermore, the extensive distributed network of activated regions suggests that the Stroop interference effect cannot be explained simply in terms of stimulus encoding or response interference.