beta wave
1
5.1
- noun
- /ˈbeɪtə weɪv/
- Specialized
:
onda beta
- Beta waves have the smallest amplitudes of recorded EEG activity (Neidermeyer & Lopez da Silva, 1999).
- alpha and beta waves
Examples
-
When presented with a cognitive task or directed thinking, the brain produces dominant frequencies within the Beta wave band.
Academic text (2000) -
Herbert found that in less than one minute of TV viewing, our dominant brain waves switch from beta waves to alpha waves.
Blog text (11) -
More alpha and beta waves than the rest of us.
Fiction book (1991) -
Beta waves are normally seen more diffusely during intense mental activity and have frequencies ranging from 13 to 30 Hz.
Academic text (2006) -
When a person is focused on a task, their brain produces beta waves that indicate alertness.
-
Scientists measure beta waves during experiments to assess cognitive engagement in participants.
-
During moments of high concentration, the presence of beta waves is a sign of an active mind.
Synonyms
A fast pattern of brain waves seen when a person is awake and alert
How Fast
- Specialized
1
5.1
- Specialized
35
4.0
- Specialized
3
6.4
- Specialized
2
7.7
- Specialized
1
7.2
Surface Forms
Morphology
A B1 learner who knows 'beta' as a Greek-letter label and 'wave' as an oscillation can infer that 'beta wave' refers to a particular kind of wave — the composition is partially transparent because Greek letters commonly label categories. However, the specific domain meaning (an EEG brainwave band at 12–30 Hz associated with alertness) relies on scientific convention and domain knowledge, so the precise referent and frequency are not fully predictable without prior exposure.
Etymology
Beta wave: The noun beta wave comes from the image of small, fast waves in the brain and the Greek letter beta, which people who study the brain used to name this quicker type. Because these waves appear when someone is 'awake' and 'alert' and actively 'thinking', the name helps you remember that beta waves mean an active, focused mind.