I couldn't help but think about some reading I was doing on hemisync. They say that making your ceribral(I think) vibrate at 4hz it can place you in a relaxed state just as you were sleeping. Now I know if say my wife says something to me while I am sleeping it enters my brain. It makes you wonder if the government or media using this stereo method to place thought in our mind, it could be so quiet you wouldn't hear it, but with one channel 4 hz differnt than the other, it would still have more influence than without. Just makes me wonder.

Well, if you're afraid of the radio trying to brainwash you there are two things you can do.

you can put up a filter that gets rid of all the frequencies that mess up your head.

Or, buy a lead helmet.

Cerebral What? There is a fair amount of junk between your ears that qualifies as cerebral. I can tell you when certain parts of your brain are cycling at 4Hz, you're prettymuch asleep (slow wave sleep, actually).

DE

If you're familiar with Whitley Streiber's book "Communion," something similar is touched on.

The idea is that the brain's conscious thoughts cycle on a certain frequency. Thus, when the resonance frequency of the brain is "hit," it stimulates certain thought patterns in the person.
I have on idea if this actually has any biological "weight," but it's speculation which I was recently privy to.