Brainwaves Freq'y bands page 4 of 4

Midrange Beta (15-18) Hz

Subjective feeling states: thinking, aware of self & surroundings
Associated tasks & behaviours: mental activity
Physiological correlates: alert, active, but not agitated

High Beta (above 18 Hz):

Subjective feeling states: alertness, agitation
Associated tasks & behaviours: mental activity, e.g. math, planning, etc.
Physiological correlates: general activation of mind & body functions.

The next frequency band in the spectrum is: Gamma (above 36 Hz).

Gamma is measured between (36 – 44) Hz and is the only frequency group found in every part of the brain. When the brain needs to process simultaneously information from different areas, its hypothesized that the 40 Hz activity consolidates the required areas for simultaneous processing. A good memory is associated with well-regulated and efficient 40 Hz activity, whereas a 40 Hz deficiency creates learning disabilities.

Gamma (40 Hz):

Subjective feeling states: thinking; integrated thoughts
Associated tasks & behaviours: high-level information processing, "binding"
Physiological correlates: associated with information-rich task processing

Brainwaves and Frequency Bands Page 4 of 4

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