A temporary method for studying hemispheric specialization is called
A) the split-brain procedure.
B) Broca's method.
C) Wada testing.
D) cortical balancing.
Answer: C
Rationale: For the Wada test, researchers begin by injecting a sedative into an artery on one side, and as the sedative travels upward into the brain, it sedates only one half of the cortex. This creates a temporary state in which one half of the cortex is doing all the work, and so researchers can test for a specific ability—such as language or mathematics—in only one hemisphere. While hemispheric specialization can also be studied in split-brain patients, the split-brain surgery is not temporary or reversible, making it unethical to use on humans for research purposes alone.
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