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delta

delta In this context, delta refers to very slow brain waves in the 0.1 to 4 Hz range.

In this context, delta refers to very slow brain waves in the 0.1 to 4 Hz range. They are commonly associated with unconscious states such as sleep and general anesthesia.

Sources

Drafting source: Pic Roca Clara; Bazregarzadeh Hanieh; Morisson Louis; Martin Antonio; Verdonck Olivier; Gibbs Steve; Lina Jean-Marc; Carrier Julie; Richebé Philippe; Duclos Catherine. Protocol for modulating anesthesia delta oscillations using closed loop auditory stimulation. 2026; DOI 10.3389/fnhum.2026.1748528; article XML SHA-256 4985741abb0d8c64dcd63ff5afed2be0b1320be9d4b36aed737018a847ee1524. “Protocol for modulating anesthesia delta oscillations using closed loop auditory stimulation” (10.3389/fnhum.2026.1748528).
CC-BY-4.0 · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: 4985741abb0d8c64dcd63ff5afed2be0b1320be9d4b36aed737018a847ee1524

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PsychTerms (psychterms.org), CC BY 4.0, version 1. “delta.” Development preview.

Version 1 · SHA-256: fd820e651bab721a1aad57874fd34acb9d9709069f430192256d381fb1ad1f87

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delta

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