Diurnal cycle

Okirikiri nke ehihie (ma ọ bụ okirikiri diele) bụ usoro ọ bụla nké na-eme kwa awa iri abụọ na anọ n'ihi otu ntụgharị zuru okè nke mbara ala Ụwa gbụrụ-gbúrụ axis ya. Mgbanwe nke ụwa na-akpata mgbanwe okpomọkụ n'elu n'ehihie na abalị, ya na mgbanwe ihu igwe n'afọ niile. Okirikiri nke ehihie na-adabere na radieshon anyanwụ na-abata.^[1]

1. ↑ Wirz-Justice (2008). "Diurnal variation of depressive symptoms". Dialogues in Clinical Neuroscience 10 (3): 337–343. DOI:10.31887/DCNS.2008.10.3/awjustice. ISSN 1294-8322. PMID 18979947.