pretty sure those patterns are a result of mechanical activations of the receptors in your retina randomly stimulating your visual cortex and activating the geometric primitives it uses to construct your visual perception
a very similar thing happens when you trip
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RT @halvorz
all i want from neuroscience is the ability to record the pretty patterns i see when i rub my eyes
https://twitter.com/halvorz/status/1385951475482902533
if this is the case, in theory we could generate those same visuals by identifying the neural activation patterns of the vortex when your eyes are rubbed, and simulating the effect they should have on your perceptive plane
unfortunately this is basically impossible