American Heritage® Dictionary of the English Language, Fourth
Edition - n. A slow brain wave, having a frequency of fewer than
six cycles per second, that emanates from the forward portion of
the brain and is associated with deep sleep in normal adults.
Also called delta rhythm. - n. the normal brainwave in the
encephalogram of a person in deep dreamless sleep; occurs with
high voltage and low frequency (1 to 4 hertz) Sorry, no example
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