How Fast is the Nervous System?

I just saw this article and I thought I'd post it.  It is about how fast the mind works.  There isn't much there but it serves to get the conversation going.  Many martial arts tricks and high-level techniques work by getting the "dupe" to respond on a slower nerve pathway then the "trickster" who triggered the reaction.  It can also work the other way, get the dupe to respond so fast they don't even realize they have already responded to the trickster creating an illusion of enormous power.  

Here is the wiki page explaining it:

I also recommend the book The Illusion of Conscious Will, by Daniel Wengner, it covers this and many other similar subjects.  It is directly applicable to martial arts.