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→Movement and sensation: edit to this wonderful paragraph about Jasper and Penfield's monolithic contributions; lateralization was already well established by then |
→Handedness and language: expanded scope of Wada. While I agree that fMRI (and TMS!) is great for investigation, Wada test is still clinical standard of care. |
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Broca's area and Wernicke’s area are linked together by a [[white matter]] fiber tract called the [[arcuate fasciculus]]. This [[axon]]al tract allows the [[neuron]]s between these two brain regions to work together to create vocal language. Further research indicates that, in approximately 98% of [[right-handed]] [[male]]s and 90-95% of right-handed [[female]]s, language and speech are subserved by the left hemisphere of the brain. Among [[left-handed]] people, language is subserved fairly equally by the left, right, or both hemispheres.
There are several methods of determining hemisphere dominance in a living [[human]]. The [[Wada test]] involves introducing an [[anesthetic]] into one hemisphere of the brain through one of the two [[carotid artery | carotid arteries]]. Once one hemisphere is anesthetized, a [[neuropsychology | neuropsychological]] exam is performed to determine dominance for such findings as language production and comprehension, verbal memory, and visual memory. More modern
===Movement and sensation===
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