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 of the following is a side effect of vagal nerve stimulation 
Select and explain. 
A. paradoxical suicide, B. voice alteration, C. aaythmia, D. epilepsy
B: voice alteration
Answer: B: voice alteration 
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