Word: callosum
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...mutant mice, the corpus callosum--the bundle of fibers which connects the two hemispheres of the brain--was almost non-existent. Additionally, the general pattern of connections in the rest of the cortex seemed to be highly altered...
While most of the gender differences uncovered so far seem to fall under the purview of the hypothalamus, researchers have begun noting discrepancies in other parts of the brain as well. For the past nine years, neuroscientists have debated whether the corpus callosum, a thick bundle of nerves that allows the right half of the brain to communicate with the left, is larger in women than in men. If it is, and if size corresponds to function, then the greater crosstalk between the hemispheres might explain enigmatic phenomena like female intuition, which is supposed to accord women greater ability...
These conjectures about the corpus callosum have been hard to prove because the structure's girth varies dramatically with both age and health. Studies of autopsied material are of little use because brain tissue undergoes such dramatic changes in the hours after death. Neuroanatomist Laura Allen and neuroendocrinologist Roger Gorski of UCLA decided to try to circumvent some of these problems by obtaining brain scans from live, apparently healthy people. In their investigation of 146 subjects, published in April, they confirmed that parts of the corpus callosum were up to 23% wider in women than in men. They also measured...
Normally these two hemispheres communicate with each other through a bundle of nerve fibers known as the corpus callosum. But if this connection is severed, their autonomy becomes evident...
...continued Dr. Kennedy, is forgetful because his memory tract, the corpus callosum (a belt of fibres connecting the two brain hemispheres), shrinks to one-third its size. And he loses interest in his environment because he is plagued by "sensations from his gut," which his brain is not strong enough to control...