A direct neural connection could be more like 5-15ms [2]
An order of magnitude difference in response time has huge ramifications for all sorts of applications.
[1] http://en.wikipedia.org/wiki/Reaction_time [2] http://en.wikipedia.org/wiki/Neuron
That's not what EEG is. It's vastly more disappointing.
> The best physical reaction time is about 160ms [1]
Yes, but you (probably) have 10 fingers, and you can get the gaps between keypresses down to <100ms. That really helps with typing.
Suppose you type 200 wpm, average word length 5 characters, maybe 980-1000 characters/minute or about 15-18 characters/second. When typed at a steady pace, you can reliably do 63ms between keystrokes. This isn't reaction time.
With EEG, you get like 1 character every 4,800 milliseconds. (Although I admit I don't know if this is using dasher, or some other typing scheme, or what. Do you get just a binary character, or any UTF-8 character in those thousands of milliseconds?)