delta rhythm

del·ta rhythm

D d

Definitions of delta rhythm words

noun delta rhythm 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 3
noun delta rhythm 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. 1

before 1935

One of the 8% newest English words

First recorded in 1935-40

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This term is known only to a narrow circle of people with rare knowledge. Only 6% of English native speakers know the meaning of this word.

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