Haggag A, Eklund B, Linaker O, Götestam K G
Department of Psychiatry and Behavioural Medicine, University of Trondheim, Norway.
Acta Psychiatr Scand. 1990 Feb;81(2):141-5. doi: 10.1111/j.1600-0447.1990.tb06467.x.
In an epidemiological study carried out in the town of Tromsö in northern Norway an extensive questionnaire was sent twice, in summer and winter, to 1000 subjects to investigate the degree of symptoms of mood variation (depression or hypomania) during the polar winter night and midnight sun seasons. The results suggest that the general population north of the Arctic Circle shows a major seasonal mood variation. It is suggested that seasonal mood variation is a chronobiological mood disturbance related to and probably precipitated by extreme variations in light. The therapeutic implications and preventive measures are discussed.
在挪威北部特罗姆瑟镇进行的一项流行病学研究中，一份详尽的调查问卷在夏季和冬季分两次发给了1000名受试者，以调查极夜和极昼季节情绪变化（抑郁或轻躁狂）症状的程度。结果表明，北极圈以北的普通人群存在明显的季节性情绪变化。研究认为，季节性情绪变化是一种与光照极端变化相关且可能由其引发的生物钟情绪障碍。文中还讨论了其治疗意义和预防措施。
