gord at homostudy.win_uk.net (G K GRAY) writes:
>>In article <4l3g00$el4 at vixen.cso.uiuc.edu>, Kevin Spencer (kspencer at s.psych.uiuc.edu) writes:
>>Emery Carr <ecarr at infohwy.com> writes:
>>>>>The only info. I have found so far is that 200hz and 210hz will cause a
>>>frequency following response of 4hz in the brain.
>>>>Hmm, never heard of that one before.
>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.