Psychology 2220A/B Chapter 16: Chapter 16 for final
8 Mar 2017
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Chapter 16: lateralization, language, and the split brain. Discovery of the specific contributions of left-hemisphere damage to aphasia and. Cerebral lateralization of function: aphasia and apraxia are associated with damage to left hemisphere. Language and voluntary movement seem to be controlled by one half of the brain, usually the left: this suggests that one hemisphere is dominant, controlling these functions. Discovery of the relation between speech laterality and handedness: the left hemisphere is speech dominant in almost all dextrals (right-handers) and most sinstrals (left-handers) Sex difference in brain lateralization: women may use both hemispheres more often for language tasks than men do; women may be less lateralized. The split brain: corpus callosum: largest cerebral commissure, transfers learned information from one hemisphere to the other, when cut, each hemisphere functions independently. In intact cats, or those with an intact corpus callosum or optic chiasm, learning transfers between hemispheres: there have been similar findings with split-brain monkeys.
