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The first study of the corpus with relation to gender was by R. B. Bean, a Philadelphia anatomist, who suggested in 1906 that "exceptional size of the corpus callosum may mean exceptional intellectual activity" and that there were measurable differences between men and women. Perhaps reflecting the political climate of the times, he went on to ...
However, a 1997 meta-study concluded that there is no relative size difference, and that the larger corpus callosum in males is due to generally larger brains in males on average; a small man and a large man would therefore have the same distinctions as the average man and the average woman. [97] [98]
A study published in the journal Brain [24] in September 2013 analyzed Einstein's corpus callosum, a large bundle of fibers that connects the two cerebral hemispheres and facilitates interhemispheric communication in the brain, using a novel technique that allowed for a higher resolution measurement of the fiber thickness. Einstein's corpus ...
Research has shown that a couple of the areas of connection between the hemispheres of the brain have differences in their size depending on sexual orientation. The front commission was found to be wider in homosexual men than heterosexual men, and the corpus callosum was found to be larger in homosexual men than heterosexual men. [9]
However, there appear to be differences in importance for white matter between verbal and nonverbal intelligence, as although both verbal and nonverbal measures of intelligence correlate positively with the size of the corpus callosum, the correlation for intelligence and corpus callosum size was larger (.47) for nonverbal measures than that ...
The corpus callosum is essential to the communication between the two hemispheres. [2] A recent study of individuals with agenesis of the corpus callosum suggests that the corpus callosum plays a vital role in problem solving strategies, verbal processing speed, and executive performance. Specifically, the absence of a fully developed corpus ...
Others have created alternative projections over the years that tried to do better justice to the Earth’s geographical scale. In recent years, many have advocated for the Gall-Peters projection, which depicts the size of each continent more accurately — but creates more unfamiliar shapes: Credit: Strebe / Wikimedia Commons
Agenesis of the corpus callosum (ACC) is a rare birth defect in which there is a complete or partial absence of the corpus callosum. It occurs when the development of the corpus callosum, the band of white matter connecting the two hemispheres in the brain , in the embryo is disrupted.