This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
which pa of the brain isstimulated in vagal nerve stimulation 
Select and explain. 
A. hippocampus, B. amygdala, C. water shed areas of brain, D. locus cereleus
D: locus cereleus
Answer: D: locus cereleus 
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 editio, pg no, 1065