Oh god, brain zaps. I think one of my doctors put me on effexor specifically so I'd have that unpleasant withdrawal if I fucked around. I was very compliant early on. The effexor worked really well and I was on it for a few years before I lost my insurance. But if I missed a day I'd get the weirdest withdrawal. I explain it to people like periodically being out of sync with reality for one second. There's no experience to compare it to.
Interesting the way you explain it as being out of sync with reality for a second. I'm not on any medication, but occasionally I do in a sense lose synchronization with reality. It lasts for a few seconds, and while I can hear and see during it, it feels like I'm watching a movie of some sort and I can effectively ignore ALL my senses, including sight. I'd love for you to elaborate on what your 'zaps' feel like to compare if they're the same thing that happens to me.