Closed Eye Hallucinations

[bulrush]

Then an amazing glowing green hexagon travelled towards me, It was so intricate no living being could create it.

The physical brain can only perceive 3 dimensions. I wonder if this was a higher dimensional shape that tried to be translated into 3 dimensions so you could perceive, at least part of it in 3 dimensions. Sort of like how a tesseract is a 4D object and the shadow it casts is 3D.