I have been reading up on the withdrawal symptoms and everyone mentions brain zapping... i have a constant low grade tinny undulating sound in my head and whooshing... which occasionally ramps up to loud and discombobulating lebels... is that the brain zap everyone is referring to? I am switching from 300 mg to 150 to 75 to 37.5... am now off and prescribed Wellbutrin... any thoughts on this switch? Weepy withdrawals. Light sensitivity and so loud