4.6 Article

Functional Brain Connectivity in Mild Cognitive Impairment With Sleep Disorders: A Study Based on Resting-State Functional Magnetic Resonance Imaging

期刊

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

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fnagi.2022.812664

关键词

default-mode network; precuneus; functional compensation; functional connectivity; mild cognitive impairment; sleep disorder

资金

  1. Sichuan Science and Technology Support Project [2018SZ0192]
  2. National Key R&D Program of China [2020YFC2003100, 2020YFC2003104]
  3. Xing-lin Scholars Project of Chengdu University of Traditional Chinese Medicine [QNXZ2018004]
  4. Hundred Talents Program
  5. Science and Technology Developmental Foundation from the Hospital of the Chengdu University of Traditional Chinese Medicine [20-Y02]

向作者/读者索取更多资源

Patients with MCI-SD exhibit distinct changes in brain network connectivity patterns compared to MCI or SD alone, suggesting a wider functional disconnection and the necessity to engage more brain regions for functional compensation.
PurposeTo investigate the effect of sleep disorder (SD) on the changes of brain network dysfunction in mild cognitive impairment (MCI), we compared network connectivity patterns among MCI, SD, and comorbid MCI and sleep disorders (MCI-SD) patients using resting state functional magnetic resonance imaging (RS-fMRI). Patients and MethodsA total of 60 participants were included in this study, 20 each with MCI, SD, or MCI-SD. And all participants underwent structural and functional MRI scanning. The default-mode network (DMN) was extracted by independent component analysis (ICA), and regional functional connectivity strengths were calculated and compared among groups. ResultsCompared to MCI patients, The DMN of MCI-SD patients demonstrated weaker functional connectivity with left middle frontal gyrus, right superior marginal gyrus, but stronger connectivity with the left parahippocampus, left precuneus and left middle temporal gyrus. Compared to the SD group, MCI-SD patients demonstrated weaker functional connectivity with right transverse temporal gyrus (Heschl's gyrus), right precentral gyrus, and left insula, but stronger connectivity with posterior cerebellum, right middle occipital gyrus, and left precuneus. ConclusionPatients with MCI-SD show unique changes in brain network connectivity patterns compared to MCI or SD alone, likely reflecting a broader functional disconnection and the need to recruit more brain regions for functional compensation.

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