Some are smeared, and some are spots

[mmcirvin]

Classic hallucinations explained as normal modes of a differential equation describing propagating excitations in the visual cortex. A couple of papers on the subject are linked here.

Comments

[mmcirvin.livejournal.com]

...Though, ever since I cultivated the ability to see the brushes years later, I admit that I've thought of it as my personal superpower. I can detect the polarization of light without external aid!! I can't read street signs without external aid, but we can't have everything.