This article is a lazy ctrl-c from psychonautwiki.
For example: https://psychonautwiki.org/wiki/Geometry#8B_-_Perceived_expo...
For example: https://psychonautwiki.org/wiki/Geometry#8B_-_Perceived_expo...
https://plus.maths.org/content/uncoiling-spiral-maths-and-ha...
https://bressloff.github.io/index.html
Some other links - not only how the cortex got its stripes but how the leopard got its spots. You see alot of this math in psychedelic visuals now (Reaction-diffusion networks etc)
(Normally, I "tune out" my visual field when I close my eyes. And for reference, my mind's eye is weak, but I do not think I have complete aphantasia.)