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.

尚不清楚大脑网络的功能连接如何影响心理压力和睡眠质量之间的关系。为了更好地了解心理压力，休息状态功能连接（RSFC）和睡眠质量之间的关联，我们使用了RSFC，匹兹堡睡眠质量指数（PSQI）和心身张力松弛量表（PSTRI）来研究心理压力之间的关系。大型健康样本中的四个大脑网络（感觉/体动（SM）网络，雪茄-机体控制（CO）网络，默认模式（DM）网络和背侧注意（DA）网络）中的睡眠，睡眠质量和RSFC。西南大学的315名大学生。结果表明，SM，CO，DM和DA网络中的大脑功能连接与睡眠质量显着相关。与此同时，