A neural basis for general intelligence
A neural basis for general intelligence
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DOI：
10.1126/science.289.5478.457
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发表时间：
2000-07-21
期刊：
影响因子：
56.9
通讯作者：
Emslie, H
中科院分区：
文献类型：
--
作者：
Duncan, J;Seitz, RJ;Emslie, H
不同认知测验之间的普遍正相关激发了“一般智力”或斯皮尔曼的g.在这里的神经基础g的研究通过正电子发射断层扫描。空间，言语和知觉运动任务与高g参与相匹配的低g控制任务进行了比较。与普遍认为g反映了主要认知功能的广泛样本相反，高g任务并没有显示出多个大脑区域的扩散招募。相反，它们与选择性招募一侧或两侧大脑半球的侧额叶皮层有关。尽管在三种高g-低g对比中的任务内容非常不同，但在每种情况下，侧额叶的募集都非常相似。许多先前的实验表明，这些相同的额叶区域被广泛的不同认知需求所募集。结果表明，“一般智力”来自一个特定的额叶系统，在控制各种形式的行为方面很重要。
Universal positive correlations between different cognitive tests motivate the concept of "general intelligence" or Spearman's g. Here the neural basis for g is investigated by means of positron emission tomography. Spatial, verbal, and perceptuo-motor tasks with high-g involvement are compared with matched Low-g control tasks. In contrast to the common view that g reflects a broad sample of major cognitive functions, high-g tasks do not show diffuse recruitment of multiple brain regions. Instead they are associated with selective recruitment of lateral frontal cortex in one or both hemispheres. Despite very different task content in the three high-g-low-g contrasts, Lateral frontal recruitment is markedly similar in each case, Many previous experiments have shown these same frontal regions to be recruited by a broad range of different cognitive demands. The results suggest that "general intelligence" derives from a specific frontal system important in the control of diverse forms of behavior.