Periodicity
| Definition: |
The tendency of a phenomenon to recur at regular intervals; in biological systems, the recurrence of certain activities (including hormonal, cellular, neural) may be annual, seasonal, monthly, daily, or more frequently (ultradian). |
| Notes: |
IM + coord with specific dis for periodically occurring dis (IM); no qualif; do not confuse with PERIODIC DISEASE, a specific clin entity: see Dorland |
| Also Called: |
Biorhythms |
Periodicity Categories.
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Circadian Rhythm - The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, feeding, etc. This rhythm seems to be set by a 'biological clock' which seems to be set by recurring daylight and darkness. |
Periodicity Definitions and Terms
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