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 Freedom
Will swim for food
 
Registered: 05/26/05
Posts: 5,024
Last seen: 19 days, 1 hour
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 One image becomes 2, 2 becomes for... 
#16129932 - 04/23/12 09:08 PM (1 year, 29 days ago) |
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I was just curious if this is a common phenomenon, where a visual is one thing filliing up the visual field, this splits in two, the two split into four, and this goes on until theres a bunch of little tiles of the same image.
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Shroomarathoner
Mind Explorer
Registered: 03/06/11
Posts: 105
Loc: Your Imagination
Last seen: 1 day, 16 hours
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Re: One image becomes 2, 2 becomes for... [Re: Freedom]
#16130049 - 04/23/12 09:32 PM (1 year, 29 days ago) |
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I saw a girl spinning a glowing hula hoop and it formed the borromean rings and then the flower of life symbol 
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I heard tripping is fun.. so I don't tie my shoes before I go for a run.
I'm so special that I'm retarded.
Things I've done: San Pedro Cactus(mescaline), Marijuana(smoked & cannabutter), MDMA, Mushrooms, LSD, Coke(insufflated), Crystal meth(insufflated, smoked), DOx blotter, ketamine(insufflated), DMT(smoked)
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 redgreenvines
irregular verb
Registered: 04/08/04
Posts: 14,954
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Re: One image becomes 2, 2 becomes for... [Re: Freedom]
#16185010 - 05/05/12 08:56 AM (1 year, 17 days ago) |
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Polyopia is the term
It is consistently reported in the literature about intoxication for the last 100 years.
I believe it is directly caused by slower fading of resonant signals in the cerebral cortex.
you can play with it when you are quite stoned, by looking at something, then turning a bit, (both objects will be visible), if you turn a bit more you can get 360 degree vision, due to the persistence.
you can even get multiple images registering just from the normal jitter of the eye (which moves the fovea around to scan the central field of vision) it will seem a bit kaleidoscopic.
If you close your eyes the images will likely double - double again and the overlapping will form cascading fractal geometric landscapes, as the slowly fading memory of the visual field is superimposed over itself - shifting slightly with your posture - your breath - your hearing etc.
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Freedom
Will swim for food
Registered: 05/26/05
Posts: 5,024
Last seen: 19 days, 1 hour
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Re: One image becomes 2, 2 becomes for... [Re: redgreenvines]
#16185220 - 05/05/12 10:29 AM (1 year, 17 days ago) |
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of courese your the one who would have known! I should have known and just pm'd you.
I was very still on acid with eyes closed and it all split very evenly without overlap. at the time I had a very strong intuition that I was seeing a visual representation of a very simple neural algorithm
there is an enormous ammount of visual processing in the retina, not just horizonaal vertical cells and motion cells but even cells that can descriminate foreground from background. These cells are laid out in a nice geometry as well, and there are 5ht2a receptors on many of them. I've been wondering if this has something to do with the geometric patterns that are so common. I'd love to get my hands on 5ht2a antagonist eye drops.
the geometry of the retina continues through the rest of the brain of course. if the slow fading is in the cortex, then its geometric organization must also come from the cortex though.
also sometimes an image persists for a long time, perhaps there is some kind of feedback loop that gets connected or just amplified to sustain the slow fading
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redgreenvines
irregular verb
Registered: 04/08/04
Posts: 14,954
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Re: One image becomes 2, 2 becomes for... [Re: Freedom]
#16218962 - 05/12/12 11:21 AM (1 year, 10 days ago) |
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5ht2a receptors in the retina?
hmmm....
I wonder if the retina normally issues pulse trains vs. one shot signals,
when I see 5ht2a receptors I immediately think - here we have an site that can extend signal pulse train duration - i.e. facilitates neural conduction from sub-threshold triggers or local field effects.
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