<prompt> which of the following is a side effect of vagal nerve stimulationparadoxical suicidevoice alterationaaythmiaepilepsy  <response>: 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 