What is Beta Rhythm?
Beta rhythm refers to brain activity in the beta frequency band (12–30 Hz). Beta waves are prominent during active, focused thinking, problem-solving, and alert wakefulness.
Characteristics
- •Frequency — 12–30 Hz
- •Location — often strongest in frontal lobes during focused tasks
- •Subjective — alert, engaged, thinking
- •Function — sustained attention, cognitive control
Why does Beta Rhythm matter?
Beta rhythm matters because it tracks active, engaged brain states such as focused thinking, problem-solving, and holding a movement steady. In the motor system, beta activity tends to drop just before and during a movement and rebound afterward, which researchers use to study motor control.
Beta is not simply "good" or "bad." Moderate beta accompanies alert attention, while persistently high beta has been associated in some studies with anxiety and rumination, though this link is not diagnostic on its own.
How is Beta Rhythm measured?
Beta rhythm is measured with electroencephalography (EEG), which records electrical activity through electrodes on the scalp, or with magnetoencephalography (MEG). Analysis software splits the signal into frequency bands, and beta is typically defined as roughly 13 to 30 Hz. Researchers look at beta power over specific regions, such as the motor cortex, and at how it changes during tasks. Readings are sensitive to muscle tension, eye movement, and some medications (benzodiazepines notably increase beta), so clean recordings and careful interpretation matter. Consumer headbands give rougher estimates than clinical EEG.
In ONDA Life
Part 8 lists "increased beta-rhythm power in the frontal lobes" among its intended markers. ONDA does not record EEG, so the app does not measure beta power, and a change in beta power on its own would not show better focus or cognitive control. Read it as a description of the program's aim, not as a progress indicator.