alpha wave


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Related to alpha wave: beta wave, theta wave

al·pha rhyth·m

1. a wave pattern in the encephalogram in the frequency band of 8-13 Hz;
2. the posterior dominant 8-13 Hz rhythm in the awake, relaxed person with closed eyes, that attenuates with eye opening.

alpha wave

n.
An electrical oscillation occurring in the human brain at a frequency of about 8 to 13 hertz as recorded on an electroencephalogram, associated with a state of relaxed wakefulness. Also called alpha rhythm.

alpha wave

one of several types of brain waves, characterized by a relatively high voltage or amplitude and a frequency of 8 to 13 Hz. Alpha waves are the "relaxed waves" of the brain and constitute the majority of waves recorded by electroencephalograms registering the activity of the parietal and the occipital lobes and the posterior parts of the temporal lobes when the individual is awake but nonattentive and relaxed, with the eyes closed. Opening and closing the eyes affect the patterns of the alpha waves and the beta waves. Also called alpha rhythm, Berger wave.Compare beta wave,delta wave, theta wave.

alpha wave

“Superficial” brain waves which have a frequency of 8 to 12 cycles/second (Hz), with an amplitude of 50 µV; alpha waves are normally present in the occipital and parietal lobes, and are intentionally induced in Silva mind control, an alternative form of psychological therapy, as Silva believed that the alpha pattern is typical of daydreaming.

alpha wave

Neurology A superficial brain wave with a frequency of 8–13 cycles/sec–Hz, an amplitude of 50 µV, which is normally seen by EEG in the occipital and parietal lobes. See Alpha rhythm, Brain waves, Silva mind control. Cf Mantra, Meditation, Theta waves, Yoga.

alpha rhythm

or

alpha wave

The most prominent waveform found in the ELECTROENCEPHALOGRAM-the recording electrical activity of the brain. It is characterized by 8 to 12 oscillations per second when the subject is at rest.

alpha waves 

Rhythmic oscillation in electrical potential occurring in the cortex of the human brain when awake and at rest. The rate of oscillation is 8-13 Hz. Syn. alpha rhythm. See resting membrane potential.
References in periodicals archive ?
Level 1, meaning a predominance of alpha waves, ranged from 0% (Session 12) to 12.
What we've discovered is if you give the subjects theanine, which is present in tea, their alpha waves decrease and they get better at the task.
It also has potential for children because they have more alpha waves than adults.
Alpha waves are associated with relaxation, but they also are believed to arise when one is actively inhibiting certain cognitive functions in favour of others, he said.
What's more, we have seen that just 20 minutes after consuming theanine, the blood concentrations increase, and the brain's alpha waves are impacted.
Scientific research has shown that during meditation there is a marked increase in alpha waves, which is an electrical rhythm associated with the release of anxiety giving a state of wakeful relaxation.
When we are meditating, which means we are relaxed but aware, the brain produces alpha waves, which come at around 10 per second.
McKenna had me look skyward to help release a burst of alpha waves, the ones that make you heighten your awareness.
When you focus, you create beta waves; when you relax, you create alpha waves," Garten explained.
The small amount of caffeine in it feeds withdrawal, while an ingredient called theanine triggers the release of calming alpha waves in the brain to relax you further.
Just looking at green house-plants helps people relax by boosting stress-relieving alpha waves in the right side of the brain," says Professor Grete Patil from the Agricultural University of Norway.