Amazing! This seems very similar to something I was taught about during my post-grad (and regret not pursuing, if only for this cool effect - https://en.m.wikipedia.org/wiki/Pinocchio_illusion). These were cortical maps ir cortical receptive fields in lower level sensory cortex of animals, for example barrel cortex of rats that processes whisker input. Areas that were sensitive to different deflection angles seemed to self-organize like this, with seemingly random organization looking at high frequency features, but becoming more ordered at lower frequency features. Specifically, "pinwheels" seemed to form, areas where all different deflection angles were represented in the map, and all these areas touched into a single vanishing point.

Like in the article the paper referenced below openly speculates about the use of organizational structures like this.

Edit: Sorry, this was written from my phone.

Relevant paper: http://onlinelibrary.wiley.com/doi/10.1002/dneu.22281/abstra... (use scihub)