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

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 electroencephalograph See also brain wave

Medical definitions for delta rhythm

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