You know the images you see when your eyes are closed, well those were “jumping” in time with the pulsations, just like the picture of an old analogue TV, when the horizontal and/or vertical hold went squiffy.
In addition, I felt dizzy and nauseous. You know the sort of dizzy and nauseous that you normally lie down to escape from … except, of course, I was already lying down, so there was no means of escape from it until I, eventually, fell asleep again. It was all this and this, without the drugs.
This morning I woke with a stabbing headache and felt sick and shaky as soon as I moved. I have sensations of “brain shakes” often, but never quite this bad.