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Abnormal white and gray matter functional connectivity is associated with cognitive dysfunction in presbycusis

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机构: [1]School of Life Sciences, Tiangong University, Tianjin 300387, China. [2]Tianjin Key Laboratory of Optoelectronic Detection Technology and System, Tiangong University, Tianjin 300387, China. [3]Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China. [4]Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan 250021, Shandong, China. [5]Beijing Institute of Otolaryngology, Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100069, China. [6]Department of Biostatistics, University of Michigan Ann Arbor, Ann Arbor, MI 48109, United States. [7]Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, United States.
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关键词: cognitive impairment functional connectivity presbycusis white matter

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Presbycusis is characterized by high-frequency hearing loss and is closely associated with cognitive decline. Previous studies have observed functional reorganization of gray matter in presbycusis, but the information transmission between gray matter and white matter remains ill-defined. Using resting-state functional magnetic resonance imaging, we investigated differences in functional connectivity (GM-GM, WM-WM, and GM-WM) between 60 patients with presbycusis and 57 healthy controls. Subsequently, we examined the correlation between these connectivity differences with high-frequency hearing loss as well as cognitive impairment. Our results revealed significant alterations in functional connectivity involving the body of the corpus callosum, posterior limbs of the internal capsule, retrolenticular region of the internal capsule, and the gray matter regions in presbycusis. Notably, disrupted functional connectivity was observed between the body of the corpus callosum and ventral anterior cingulate cortex in presbycusis, which was associated with impaired attention. Additionally, enhanced functional connectivity was found in presbycusis between the internal capsule and the ventral auditory processing stream, which was related to impaired cognition in multiple domains. These two patterns of altered functional connectivity between gray matter and white matter may involve both bottom-up and top-down regulation of cognitive function. These findings provide novel insights into understanding cognitive compensation and resource redistribution mechanisms in presbycusis.© The Author(s) 2023. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

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大类 | 2 区 医学
小类 | 3 区 神经科学
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大类 | 3 区 医学
小类 | 3 区 神经科学
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第一作者机构: [1]School of Life Sciences, Tiangong University, Tianjin 300387, China. [2]Tianjin Key Laboratory of Optoelectronic Detection Technology and System, Tiangong University, Tianjin 300387, China.
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通讯机构: [3]Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China. [7]Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN 37232, United States. [*1]Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, 1161 21st Ave. S, Medical Center North, AA-1105, Nashville, TN 37232-2310, United States [*2]Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jingwu Road No. 324, Jinan 250021, China
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