http://plus.maths.org/content/uncoiling-spiral-maths-and-hallucinations > > It uses some maths developed by Alan Turing for simulating the development of patterned animal coats. > > I couldn't find a thread on NDEs but this seemed an appropriate one. The article is facinating, but I didn't see that the patterns fit the description of a tunnel leading to a very bright light, as many NDE'sreport.