Abstract
This study aimed to systematically investigate abnormal morphological connectivity in subregions of the thalamus and examine the clinical relevance of this connectivity in patients with chronic insomnia. One hundred and two patients with chronic insomnia (aged 45.50 [34.75 ~ 58.00] years; 24 men, 78 women) and one hundred and one healthy controls (aged 45.00 [34.00 ~ 55.00] years; 32 men, 69 women) were recruited. Intrathalamic and thalamocortical morphological connectivity in the thalamic subregions defined in the Human Brainnetome Atlas were computed and compared between the two groups. Spearman’s correlation was used to estimate the association between thalamic morphological connectivity alterations and clinical variables. Compared with the control group, the insomnia group exhibited higher intrathalamic mean morphological connectivity than the control group, though no alterations in thalamocortical morphological connectivity were observed. However, no correlation was found between altered intrathalamic morphological connectivity and behavioral scales. In addition, alterations in morphological connectivity among thalamic subregions were found mainly in the left medial premotor thalamus, left medial prefrontal thalamus, and left sensory thalamus; however, these results were no longer significant after correction. Our findings suggest increased intrathalamic morphological connectivity in patients with chronic insomnia, thus enriching the understanding of morphological connectivity at the individual level and providing new perspectives for clinical interventions and diagnostic imaging.
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The deidentified data are available from the corresponding author upon reasonable request.
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This work was supported by the National Natural Science Foundation of China (Nos. 82001792) and the Science Foundation of Guangdong Second Provincial General Hospital (No. 3D-A2021009).
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X.Y., G.X. and Y.Y. performed the experiments and wrote the main manuscript text. Y.Y. and S. analyzed the data. X.W. prepared Figs. 1, 2 and 3. X.M. conceived and designed the experiments and revised the main manuscript text. All authors reviewed the manuscript.
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Ye, X., Yang, Y., Xu, G. et al. Enhanced intrathalamic morphological connectivity in patients with chronic insomnia. Brain Imaging and Behavior 17, 114–124 (2023). https://doi.org/10.1007/s11682-022-00747-1
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DOI: https://doi.org/10.1007/s11682-022-00747-1