there are many more of these things, but those are definately the most dominant ones.
The real interesting thing seems to be that psychedelics do two different things 1-they in some way distort the visual system itself. and 2-they also interfere in the way how you interpret the images you see. This last thing may be more a result of the mental processes they induce, and therefore they may be more serotonin related than the pure technical distortions of the visual system itself.
It is probably the interaction between those two different parts of visual awareness, that is responsible for the weird visual phenomena you see with psychedelic's.
For instance when someone believe's to see the window 'breathe', this is 1- a part of that lense focussing thing, but the interpretation of seeing a growing and shrinking window as if it's breathing is probably more a mental than a pure technical thing.
The real interesting thing seems to be that psychedelics do two different things 1-they in some way distort the visual system itself. and 2-they also interfere in the way how you interpret the images you see. This last thing may be more a result of the mental processes they induce, and therefore they may be more serotonin related than the pure technical distortions of the visual system itself.
It is probably the interaction between those two different parts of visual awareness, that is responsible for the weird visual phenomena you see with psychedelic's.
For instance when someone believe's to see the window 'breathe', this is 1- a part of that lense focussing thing, but the interpretation of seeing a growing and shrinking window as if it's breathing is probably more a mental than a pure technical thing.