Definition

1. Noun:
   • A type of brain wave: An "alpha wave" is a specific pattern of electrical activity in the human brain. It is the normal brainwave pattern recorded by an electroencephalogram (EEG) when a person is in a relaxed, awake state with their eyes closed. These waves have a frequency range of 8 to 12 cycles per second (hertz).

Usage Examples

• Noun:
  • Meditation often increases the production of alpha waves, promoting a state of calm alertness.
  • The EEG showed strong alpha wave activity, indicating the patient was relaxed.
  • Scientists study alpha waves to understand states of relaxation and focused attention.

Advanced Usage

• "Alpha rhythm": This is a synonymous term often used interchangeably with "alpha wave" in scientific literature.
  • The dominant alpha rhythm was clearly visible on the EEG readout.

Variants and Related Words

• Alpha rhythm (n): Another term for the alpha wave pattern.
• Brainwave (n): A general term for the rhythmic electrical impulses generated by the brain, of which the alpha wave is one type.
• Electroencephalogram (EEG) (n): The test that measures and records brainwave patterns like alpha waves.

Synonyms

• Alpha rhythm: The standard synonym in neuroscience.
• Berger rhythm: A historical term named after Hans Berger, the inventor of the EEG who first described these waves.

Related Phrases

• Alpha state: A term used in some contexts to describe the relaxed, wakeful mental state associated with alpha wave production.
  • Some musicians find they enter an alpha state during creative flow.

Noun

1. the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz