Brainwave
Brainwave
Brainwave (pronounced: /ˈbreɪnˌweɪv/), also known as neural oscillation, is a pattern of neural activity in the brain which can be observed with an EEG (Electroencephalogram). The term "brainwave" is derived from the English words "brain" and "wave", indicating the wave-like patterns of neural activity.
Etymology
The term "brainwave" was first used in the early 20th century, following the discovery of electrical activity in the human brain. The word is a combination of "brain", from the Old English brægen meaning "brain", and "wave", from the Old English wafian meaning "to wave or fluctuate".
Types of Brainwaves
There are several types of brainwaves, each associated with different states of consciousness:
- Delta waves: These are the slowest brainwaves, typically occurring during deep sleep.
- Theta waves: These brainwaves are associated with light sleep and deep relaxation.
- Alpha waves: These occur during states of relaxation and calmness.
- Beta waves: These are associated with active thinking and concentration.
- Gamma waves: These are the fastest brainwaves, associated with high-level cognitive processing.
Related Terms
- EEG: A method of recording electrical activity of the brain.
- Neuroscience: The scientific study of the nervous system.
- Neuron: The basic working unit of the brain.
- Cognitive neuroscience: The scientific study of neural mechanisms underlying cognition.
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