For 10 points, identify this structure, the brain's largest white matter tract, which connects the left and right cerebral hemispheres.
Agenesis of this structure during fetal development leads to eversion of the cingulate gyrus and the formation of Probst bundles. It contains both heterotopic and homotopic connections, and diffusion tensor imaging has been used to identify regions including the rostrum, genu, and splenium. This structure is not found in either marsupials or monotremes; in humans it is important for bimanual motor coordination. Gazzaniga and Sperry studied the effects of damage to it, which it can lead to disconnection syndrome or alien hand syndrome. The condition caused by completely severing the axons in this structure is called "split brain," and it is bisected as a last resort to treat patients with severe multifocal epilepsy. For 10 points, identify this structure, the brain's largest white matter tract, which connects the left and right cerebral hemispheres.
Agenesis of this structure during fetal development leads to eversion of the cingulate gyrus and the formation of Probst bundles.
{corpus callosum}