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Question About Low Frequency Sounds

I came across the following info on the internet and I can't figure out whether it makes any sense or not.

Sound frequencies below 20Hz (even up to 30Hz) can directly affect states of consciousness. For those of you who don't know, our brains vibrate at different frequencies depending on the level of awareness (consciousness) we are in. Consciousness lies on a continuum. The scale is as follows:

.5-3Hz - Delta. This is the sleep state.
4-7Hz - Theta. The meditative/hypnotic state.
8-12Hz - Alpha. The "relaxed alert" state.
13-20Hz - Beta. Normal wakeful consciousness.
20-32Hz - High beta. Manic states.

Does anybody know anything about this? If true, it's implications on music reproduction could be profound.
onhwy61

Showing 1 response by doc_stereo

doc_stereo
31 posts
 
Onhwy61,

The information about brain waves are true. They are the typical brain activity as measured on an EEG (electroencephalogram), and often used in sleep studies.
Delta waves are found in the deepest stages of sleep, while beta waves are much higher in frequency (relatively) and seen in REM sleep.

What their implications on music is beyond me.

Doc
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