If a doctor wanted to activate a very specific brain region in the hope of alleviating symptoms of a mental disorder, she would most likely use which of the following procedures?
a. Focal lesion
b. Lithium
c. Electroconvulsive therapy
d. Deep brain stimulation
Answer: D
Rationale: A device serving as a brain pacemaker is implanted and connected to electrode-tipped wires that are routed to under-stimulated brain regions.
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