4.6 Article

Self-Reported Sleep Quality Across Age Modulates Resting-State Functional Connectivity in Limbic and Fronto-Temporo-Parietal Networks: An Exploratory Cross-Sectional fMRI Study

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FRONTIERS IN AGING NEUROSCIENCE
卷 14, 期 -, 页码 -

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FRONTIERS MEDIA SA
DOI: 10.3389/fnagi.2022.806374

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subjective sleep quality; functional connectivity; anxiety; depression; working memory

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Sleep problems are common in the general population and are often associated with memory disturbances, anxiety, and depression. This study found that sleep quality is related to functional connectivity in the brain, and individuals with poor sleep perform worse in cognitive tasks and display anxious/depressive behavior.
Sleep problems are increasingly present in the general population at any age, and they are frequently concurrent with-or predictive of-memory disturbances, anxiety, and depression. In this exploratory cross-sectional study, 54 healthy participants recruited in Naples (Italy; 23 females; mean age = 37.1 years, range = 20-68) completed the Pittsburgh Sleep Quality Index (PSQI) and a neurocognitive assessment concerning both verbal and visuospatial working memory as well as subjective measures of anxiety and depression. Then, 3T fMRI images with structural and resting-state functional sequences were acquired. A whole-brain seed-to-seed functional connectivity (FC) analysis was conducted by contrasting good (PSQI score <5) vs. bad (PSQI score >= 5) sleepers. Results highlighted FC differences in limbic and fronto-temporo-parietal brain areas. Also, bad sleepers showed an anxious/depressive behavioural phenotype and performed worse than good sleepers at visuospatial working-memory tasks. These findings may help to reveal the effects of sleep quality on daily-life cognitive functioning and further elucidate pathophysiological mechanisms of sleep disorders.

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