NEUR 2P37 Lecture Notes - Lecture 10: Wada Test, Lateralization Of Brain Function, Commissure
20 Feb 2017
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The wada test is used to establish hemispheric dominance for language before surgery. A barbiturate is injected into one hemisphere to interrupt speech fmri- based tests are more precise and less invasive. In the wada test sodium amobarbital is injected into the carotid artery to anesthetize half of the brain. This helps clinicians find out whether language functions are on the right half or the left half of a perso(cid:374)"s (cid:271)rai(cid:374) The left and right hemisphere exchange info primarily through a set of axons called the corpus callosum. Info crosses to the other hemisphere with only a brief delay. The 2 hemispheres are not mirror images of each other. There is a division of labor between two hemispheres which is known as . In most humans, the left side is specialized for language. The corpus callosum allows each hemisphere of the brain access to info from both sides.
