WordNet
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) [syn: delta wave]
Usage examples of "delta rhythm".
Yet, the most prominent pattern is the delta rhythm that is universally associated with sleep and some types of damage to the brain.
I don't know how long I stood there, wishing Loman would walk out of here under a bus, wishing Pepperidge, a man I'd come to like, come to respect, hadn't conned me into an abortive enterprise, wishing I could go and lie down somewhere and let the throbbing in the blood slow to the delta rhythm of sleep.