Beta rhythm

Beta rhythm is a type of brain wave that is typically associated with active, busy or anxious thinking and active concentration. Beta waves are divided into three sections: Low Beta Waves (12.5–16 Hz, "Beta 1 power"); Beta Waves (16.5–20 Hz, "Beta 2 power"); and High Beta Waves (20.5–28 Hz, "Beta 3 power").

Characteristics

Beta waves are of relatively low amplitude, and are the fastest of the four different brainwaves. The frequency of beta waves ranges from 15 to about 30 Hz. They are characteristic of an engaged mind, which is actively absorbing information. Beta waves are observed in individuals who are alert, attentive, engaged in problem solving, judgment, decision making, or focused mental activity.

Function

Beta waves are important for effective functioning in daily life. They are associated with the mental state of logical thought, analysis, and action. They are involved in conscious thought, logical thinking, and tend to have a stimulating affect. Having the right amount of beta waves allows us to focus and complete school or work-based tasks easily.

Beta waves in neuroscience

In neuroscience, beta waves are often associated with active, busy or anxious thinking and active concentration. Over the motor cortex beta waves are associated with the muscle contractions that happen in isotonic movements and are suppressed prior to and during movement changes.

Beta waves in sleep

During sleep, beta waves are considered abnormal. However, they are not uncommon when a person is under stress or is having a nightmare. Beta waves are also present during REM sleep.

Beta waves in meditation

In meditation, beta waves are present in the state of active concentration. This is the state where the mind is aware of everything that is happening around it.

See also

• Alpha wave
• Delta wave
• Theta wave
• Gamma wave