In brain wave frequencies, beta is the frequency range of mental activity. Thinking and reasoning take place in beta.

The frequency range of beta is 14 to 30 cps (cycles per second). Beta is the highest frequency range for human brains.

Beta waves are characteristic of a heavily engaged mind. A person active in conversation or debating would be in beta. A person making a speech, or a teacher, or a talk show host would all be in beta when they are engaged in their work.

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