How developing peripheral vision affects consciousness. This is HUGE!
Here is one of the most fascinating reads I've recently come across. (Thank you, bojole!)
You could skip the eye physiology and just scroll down to where he starts talking about the Japanese master Musashi and how his writing inspired the "nightwalking" practice they developed.
From there on it gets REALLY interesting! Shades of Castaneda!
http://www.navaching.com/hawkeen/nwalk.html