ULTRADIAN RHYTHM

any periodic variance in physiological or psychological operation recurring within a cycle of more than one day, like the female menstrual cycle.

ULTRADIAN RHYTHM: "The ultradian rhythm patterns will be observed and recorded in twenty females in their twenties."
Cite this page: Nugent, Pam M.S., "ULTRADIAN RHYTHM," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/ultradian-rhythm/ (accessed November 17, 2017).
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