Entrainment of brainwaves

[Emery Carr]

>>Why should we *not* expect to find a 4hz response in the brain when those
>>who tune musical instruments have been using this "beat" phenomenon for 
>>generations to perform this task, or am I misunderstanding the question?
>>The effect can be measured physically and organically.
>
>The 4 Hz response Emery referred to is in the EEG.  Certainly people can
>perceive auditory stimuli at 4 Hz, but it doesn't necessarily mean that the
>EEG is entrained at that frequency.
>
>Kevin

Yeah, well that's not what I'm talking about.

What I'm talking about is using binaural beats to entrain brainwave 
frequencies  -- one frequency is played in one ear and another frequency 
is played in the other ear. When that happens, the brain perceives a 
third tone.

That's pretty much all I know about it right now, however, I know that it 
has been proven to be a useful method for entraining brainwaves (in the 
EEG)

All I want to know is if anyone has the information as to which 
frequencies will create which responses...