alpha rhythm

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Related to alpha activity: alpha rhythm

alpha rhythm

[′al·fə ‚rith·əm]
(physiology)
An electric current from the occipital region of the brain cortex having a pulse frequency of 8 to 13 per second; associated with a relaxed state in normal human adults.
References in periodicals archive ?
Interestingly, Kubitz and colleagues (1996; 1997) observed decreases in alpha activity during exercise, while the present investigation observed increases in alpha activity.
In relation to performance, only right hemispheric alpha activity was significantly associated with accuracy.
Biomuse's processing circuitry can sift through the continuous and busy EEG signals and detect the onset of alpha activity.
Since alpha activity is associated with both wakefulness and receptiveness to sensory signals, the researchers hypothesized that it also could indicate a sleeper's sensitivity to environmental stimuli.
Similarly, individual responses to new therapies that block either IL-1 or TNF alpha activity also vary between individuals.