I know of these brain zaps
They are no joke and if you have experienced them you would probably know exactly how to describe them. When on a high dose psychedelic walk or a low dose one, I have been nearly knocked on my feet by these. They dont happen too many times during a trip. They usually fit into the trip very well. That is to say, they are well placed and seem very meaningful.
If I fall asleep on lsd, "they" usually wake me up. A fractal audio-visual collection of interconnected noises/synesthesia that grows in intensisty as I fall into an actual sleep state. When I reach the sleep state I have fully entered them and they sound like endless electricity coarsing through hollow metal poles being choped on by chain saws, when they become so loud that they TOTALLY wake me up. This is the sleep state scenario, not nearly as intense, and its fairly organic feeling because I dont abuse drugs and have never even used mdma/methy concoctions.
You can slip into it when awake. When it happens for a split second while you are awake, you are going to remember it and its so intense and weird that you will likely think something is wrong with you. It feels like getting hit by a small bolt of lightening and it lasts for way less than one second.
I have experienced them on a mushrooms and lsd combo, and lsa and mushrooms combo, and on ayahuasca.
If its happened to you then you will know it.
I dont pretend to understand why this happens. It can even happen upon waking from a trance or sleep. Its not entirely mdma, or ssri related at all.
If you really give a shit about how I experience it, just ask.
Otherwise, im not going to bother to explain a damn thing.
I just know how fast this message board flows, and im not going to explain a single theory because nobody is going to read it.
I mainly just wanted to say that if this has happened to you you will definitely know it and will likely find this subject to be very interesting.