BJPsych：女性抑郁影响因素:睡眠与情绪间的相互作用

　　发表于《英国精神病学杂志》（The British Journal of Psychiatry）6月在线版的一项以人群为基础的双样本分析研究的结果显示，每日的睡眠质量与情绪之间存在着微妙的联系，彼此之间进行重复性的影响，且睡眠质量对情绪造成的影响大于情绪对睡眠质量的影响。这或许是女性抑郁形成过程中的影响因素之一。

　　睡眠质量差是抑郁的一个危险因素，但是其内在机制尚不明确。为理清睡眠质量与抑郁之间可能的内在联系，研究采用经验取样法（ESM），将关注点缩小到“微观水平”，观察人们日常生活模式中的主观睡眠和情绪状态。 

　　总计553名女性参与此以人群为基础的双样本分析，进行5天基准的ESM研究综合评估参与者的主观睡眠和情绪状况，并进行四次抑郁随访评估。

　　结果发现，睡眠质量与次日的情绪状态（特别是正面情绪）有关。白天的负面情绪与随后的夜间睡眠无关。基础睡眠状况可预示整个随访期间的抑郁症状。

Day-to-day associations between subjective sleep and affect in regard to future depression in a female population-based sample
Background
Poor sleep is a risk factor for depression, but little is known about the underlying mechanisms.
Aims
Disentangling potential mechanisms by which sleep may be related to depression by zooming down to the ‘micro-level’ of within-person daily life patterns of subjective sleep and affect using the experience sampling method (ESM).
Method
A population-based twin sample consisting of 553 women underwent a 5-day baseline ESM protocol assessing subjective sleep and affect together with four follow-up assessments of depression.
Results
Sleep was associated with affect during the next day, especially positive affect. Daytime negative affect was not associated with subsequent night-time sleep. Baseline sleep predicted depressive symptoms across the follow-up period.
Conclusions
The subtle, repetitive impact of sleep on affect on a daily basis, rather than the subtle repetitive impact of affect on sleep, may be one of the factors on the pathway to depression in women.