delta wave

delta wave
delta wave n a high amplitude electrical rhythm of the brain with a frequency of less than 6 hertz that occurs esp. in deep sleep, in infancy, and in many diseased conditions of the brain called also delta, delta rhythm

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1. a small hump occurring on the upstroke of the QRS complex in electrocardiography; it is characteristic of preexcitation. 2. (in the pl.) waves in the electroencephalogram that have a frequency below 4 per second; they are typical in deep sleep, in infancy, and in serious brain disorders.

Medical dictionary. 2011.

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  • delta wave — noun 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 rhythm • Hypernyms: ↑brainwave, ↑brain wave, ↑cortical potential * * * noun also …   Useful english dictionary

  • delta wave — noun Date: 1936 a high amplitude electrical rhythm of the brain with a frequency of less than four cycles per second that occurs especially in slow wave sleep, in infancy, and in many diseased conditions of the brain called also delta, delta… …   New Collegiate Dictionary

  • delta wave — {n.}, {informal}, {semi technical} A brain wave 1 3 cycles per second, associated with very deep sleep. * /Good night, honey, I m off to produce some delta waves./ Compare: CATCH SOME Z S, HIT THE HAY or HIT THE SACK …   Dictionary of American idioms

  • delta wave — {n.}, {informal}, {semi technical} A brain wave 1 3 cycles per second, associated with very deep sleep. * /Good night, honey, I m off to produce some delta waves./ Compare: CATCH SOME Z S, HIT THE HAY or HIT THE SACK …   Dictionary of American idioms

  • delta\ wave — noun informal semi technical A brain wave 1 3 cycles per second, associated with very deep sleep. Good night, honey, I m off to produce some delta waves. Compare: catch some Z s, hit the hay or hit the sack …   Словарь американских идиом

  • delta wave — del′ta wave n. phl any of the slow brain waves constituting delta rhythm • Etymology: 1935–40 …   From formal English to slang

  • delta wave — Physiol. any of the slow brain waves constituting delta rhythm. [1935 40] * * * …   Universalium

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