Gazzaniga, Michael S. State University of New York, Stony Brook, New York.
Last reviewed:January 2020
- Results of tests involving speech
- Results of tests not involving speech
- Right hemisphere
- Left hemisphere
- Emotional reactions
- Localization of the speech processor
- Specificity of cortical circuitry
- Individual variation and age of surgery
- Related Primary Literature
- Additional Reading
The human brain is a bilaterally symmetrical structure which is for the most part richly interconnected by two main bridges of neurons called the corpus callosum and anterior commissure. These structures can be surgically sectioned in humans in an effort to control the spread of epileptic seizures. Although there is no apparent change in everyday behavior of these patients, dramatic differences in cognitive function can be demonstrated under specialized testing conditions. Because of these studies it now can be said that in normal humans these cerebral commissures are largely responsible for behavioral unity; the neural mechanism keeps the left side of the body up to date with the activities of the right side, and vice versa.
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