School of Education Science, Hunan Normal University, Chang Sha, 410081, China; Cognition and Human Behavior Key Laboratory of Hunan Province, Hunan Normal University, Chang Sha 410081, China.
School of Education Science, Hunan Normal University, Chang Sha, 410081, China; Cognition and Human Behavior Key Laboratory of Hunan Province, Hunan Normal University, Chang Sha 410081, China.
Brain Cogn. 2020 Dec;146:105641. doi: 10.1016/j.bandc.2020.105641. Epub 2020 Nov 1.
How the functional connectivity of brain networks affects the relationship between psychological stress and sleep quality remains unclear. To better understand the associations between psychological stress, resting-state functional connectivity (RSFC), and sleep quality, we used the RSFC, Pittsburgh Sleep Quality Index (PSQI), and Psychosomatic Tension Relaxation Inventory (PSTRI) to investigate the relationship between psychological stress, sleep quality, and RSFC in four brain networks, the sensory/somatomotor (SM) network, cigulo-opercular control (CO) network, default mode (DM) network, and dorsal attention (DA) network, in a large healthy sample of 315 college students from Southwest University. Results showed that the brain functional connectivity in the SM, CO, DM, and DA networks was significantly correlated to sleep quality. Meanwhile, we also found that the brain functional connectivity between the SM and CO networks partially mediated the relationship between psychological stress and sleep quality, suggesting that psychological stress has an important effect on individuals' sleep quality, and increased functional connectivity between the SM and CO networks provides a neural basis for the association between psychological stress and poor sleep quality.
大脑网络的功能连接如何影响心理压力与睡眠质量之间的关系尚不清楚。为了更好地理解心理压力、静息态功能连接（RSFC）和睡眠质量之间的关联，我们使用 RSFC、匹兹堡睡眠质量指数（PSQI）和身心紧张松弛量表（PSTRI），调查了心理压力、睡眠质量与 RSFC 之间的关系，在西南大学的 315 名大学生的大样本中，研究了四个脑网络，感觉/躯体运动（SM）网络、扣带前/后扣带皮层控制（CO）网络、默认模式（DM）网络和背侧注意（DA）网络。结果表明，SM、CO、DM 和 DA 网络的脑功能连接与睡眠质量显著相关。同时，我们还发现，SM 和 CO 网络之间的脑功能连接部分介导了心理压力与睡眠质量之间的关系，表明心理压力对个体的睡眠质量有重要影响，SM 和 CO 网络之间功能连接的增加为心理压力与睡眠质量差之间的关联提供了神经基础。
