delta rhythm


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delta rhythm

or

delta wave

n
(Physiology) 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

del′ta rhythm`


n.
a pattern of slow brain waves, less than 6 cycles per second, associated with the deepest phase of slow-wave sleep.
[1935–40]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.delta rhythm - the normal brainwave in the encephalogram of a person in deep dreamless sleep; occurs with high voltage and low frequency (1 to 4 hertz)
brain wave, brainwave, cortical potential - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph
References in periodicals archive ?
The results correlate with the explanation of loss of normal alpha rhythm and prominence of delta rhythm during encephalopathy.
The change in the delta rhythm index is in the range of 40-80%.
In a group of similar population with a group of individuals with similar characteristics of the delta rhythm, the hypothesis tested changes in biological parameters by t-test with a level of significance of 0,05.

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