Humans and great apes share a large frontal cortex
Humans and great apes share a large frontal cortex
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DOI：
10.1038/nn814
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发表时间：
2002-03-01
影响因子：
25
通讯作者：
Damasio, H
中科院分区：
文献类型：
--
作者：
Semendeferi, K;Lu, A;Damasio, H
人类的一些杰出的认知能力通常被归因于人类额叶在进化过程中不成比例的扩大。这一说法主要是基于人类和其他灵长类动物的大脑之间的比较，排除了大多数类人猿。我们使用磁共振成像技术比较了几种灵长类动物的活体标本的额叶皮质的相对大小，包括所有现存的类人猿。与类人猿相比，人类的额叶皮质并不是不成比例的大。我们认为，额叶优势的特殊认知能力可能是由于个别皮质区域的差异和更丰富的相互联系，这些都不需要在原始人进化过程中增加额叶的整体相对大小。
Some of the outstanding cognitive capabilities of humans are commonly attributed to a disproportionate enlargement of the human frontal lobe during evolution. This claim is based primarily on comparisons between the brains of humans and of other primates, to the exclusion of most great apes. We compared the relative size of the frontal cortices in living specimens of several primate species, including all extant hominoids, using magnetic resonance imaging. Human frontal cortices were not disproportionately large in comparison to those of the great apes. We suggest that the special cognitive abilities attributed to a frontal advantage may be due to differences in individual cortical areas and to a richer interconnectivity, none of which required an increase in the overall relative size of the frontal lobe during hominid evolution.