Definitions for "Alpha activity"
Keywords:  eeg, rhythm, ofr, oscillations, waves
The presence of alpha waves or alpha rhythm (i.e., electrical oscillations in the alpha frequency) in the EEG of humans. See Alpha rhythm.
Rhythm at 8-13 Hz, characteristic of relaxed wakefulness with eyes closed
An alpha EEG wave ofr sequence of waves with a frequency of 8-13 Hz.