Strauss E, Wada J, Hunter M
Department of Psychology, University of Victoria, B.C., Canada.
J Clin Exp Neuropsychol. 1994 Feb;16(1):79-83. doi: 10.1080/01688639408402618.
Variation in the size of the human corpus callosum was examined in relation to variation in measured IQ. The midsagittal surface area of the corpus callosum, obtained by magnetic resonance imaging, was measured in 47 patients with epilepsy. Intellectual ability was positively related to a larger posterior callosal area. We suggest that the relationship between the posterior callosal region and measured intelligence is "non-functional" in itself, but rather, may reflect other anatomical-cognitive associations. That is, differences in splenial size may reflect differences in the number of cortical neurons and interconnections between areas of the brain that are important for processing the kind of information measured on intelligence tests. Our conclusions, however, must be tempered by a number of factors; in particular, the nature of our subjects and the relatively small sample size.
研究了人类胼胝体大小的变化与测量智商变化之间的关系。通过磁共振成像获得的胼胝体矢状面面积，在47例癫痫患者中进行了测量。智力与较大的胼胝体后部面积呈正相关。我们认为，胼胝体后部区域与测量智力之间的关系本身“并无功能关联”，而是可能反映了其他解剖学与认知的关联。也就是说，胼胝体压部大小的差异可能反映了大脑区域中对处理智力测试所测信息类型很重要的皮质神经元数量和区域间连接的差异。然而，我们的结论必须受到一些因素的限制；特别是我们研究对象的性质以及相对较小的样本量。
