Wednesday, December 21, 2005

Beta rhythm range from 12 Hz to 30Hz.

Low Beta: 12..15Hz (SMR), Mid Beta: 16Hz..22Hz, High Beta: 23..30Hz
Which is the range of normal waking consciousness.
Sterman named the frequency sensorimotor rhythm a rhythmic signal peaking in the range of 12 to 15 Hz that from a specific part of the brain, the sensorimotor cortex, and so it is called SMR.

The amplitude of the beta waves is generally less than 20 micro V.
Increasing the energy while lengthening the wavelength of the brain wavers can act as both a magnifying lens and an amplifier, which causes a narrowing of focus on beta waves. Narrow frequency band of continuously Beta peaks mean more focussing than wide frequency band of Beta peaks. High amplitude mean more high focussing.

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