delta rhythm

noun Physiology.

a pattern of slow brain waves, having a frequency of less than 6 cycles per second as recorded by an electroencephalograph, associated with deep sleep.

Origin of delta rhythm

First recorded in 1935–40

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British Dictionary definitions for delta rhythm

delta rhythm

delta wave

noun

physiol the normal electrical activity of the cerebral cortex during deep sleep, occurring at a frequency of 1 to 4 hertz and detectable with an electroencephalographSee also brain wave

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delta rhythm in Medicine

delta rhythm

n.

A brain wave pattern originating from the forward portion of the brain and having a frequency of between 1.5 and 4.0 hertz; it is associated with deep sleep in normal adults.delta wave