Exposure to long summer days affects the human melatonin and cortisol rhythms.
Brain Res
; 759(1): 166-70, 1997 Jun 06.
Article
en En
| MEDLINE
| ID: mdl-9219878
ABSTRACT
Exposure of 8 human subjects in summer to a natural 16 h bright light photoperiod phase advanced the morning salivary melatonin decline and cortisol rise and shortened the nocturnal melatonin signal by 2 h relative to the winter patterns of the same subjects followed under a combined artificial and natural light 16 h photoperiod. The data suggest that summer days experienced from sunrise till sunset and not winter days with a combined artificial and natural light long photoperiod evoke a true long day response of the human circadian system.
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Banco de datos:
MEDLINE
Asunto principal:
Estaciones del Año
/
Hidrocortisona
/
Ritmo Circadiano
/
Fotoperiodo
/
Melatonina
Límite:
Adolescent
/
Female
/
Humans
/
Male
Idioma:
En
Año:
1997
Tipo del documento:
Article