delta wave


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delta wave

n.
An electrical oscillation occurring in the human brain at a frequency of less than about four hertz as recorded on an electroencephalogram, associated with a state of deep sleep or unconsciousness. Also called delta rhythm.

del′ta wave`


n.
any of the slow brain waves constituting delta rhythm.
[1935–40]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.delta wave - 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 ?
9] normal or wide QRS with delta wave Rightward cardiac displacement Abnormal chest radiograph Misplacement of precordial leads No limb lead abnormalities Normal variant No other abnormalities LVH indicates left ventricular hypertrophy; RAD, right axis deviation; RAE, right atrial enlargement.
This is because the loss of the delta wave shows that the accessory pathway cannot conduct electrical impulses at a high rate.
Ventricular preexcitation with a short P-R interval and a wide QRS complex with a delta wave was never seen during sinus rhythm or tachycardia in this patient.
Baseline electrocardiogram (ECG) revealed delta wave pattern consistent with the presence of a right sided accessory pathway (AP).