This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Treatment in psychiatry, Subject name: Anatomy
which pa of the brain is stimulated in vagus nerve stimulation 
Select and explain. 
A. amygdala, B. cingulate bundle, C. raphe nucleus, D. corpus collasum
C: raphe nucleus
Answer: C: raphe nucleus 
Explanation: Vagus nerve stimulation * Electrical stimulation of left vagus nerve * Stimulation of raphe nucleus and locus cereleus * Release of norepinephrine and serotonin * Side effects * Voice alteration Ref. kaplon and sadock, synopsis of psychiatry, 11 th edition, pg no. 1065