کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6817139 | 1433883 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distance-dependent alterations in local functional connectivity in drug-naive major depressive disorder
ترجمه فارسی عنوان
تغییرات وابسته به فاصله در ارتباطات کاربردی محلی در اختلال افسردگی عمده داروهای ناخواسته
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کلمات کلیدی
اختلال افسردگی عمده، تصویربرداری رزونانس مغناطیسی عملکردی، حالت استراحت، فاصله وابسته، قدرت اتصال کارکردی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
روانپزشکی بیولوژیکی
چکیده انگلیسی
Previous studies using resting-state functional magnetic resonance imaging (fMRI) have found abnormal functional connectivity in patients with major depressive disorder (MDD). Yet, effect of distance thresholds on local functional connectivity changes in MDD is largely unknown. Here, we used resting-state fMRI data and functional connectivity strength (FCS) method to test local functional connectivity differences at different distance thresholds between 47 drug-naive patients with MDD and 47 healthy controls. For the distribution of functional brain hubs with high local FCS, the overall changing trend from distance thresholds of 10Â mm to 100Â mm was from lateral to medial. Compared to controls, MDD patients exhibited decreased local FCS independent of distance threshold in the sensorimotor system (postcentral gyrus, paracentral lobule, and supplementary motor area). MDD Patients exhibited increased local FCS in the inferior temporal gyrus at two lower distance thresholds (20Â mm and 30Â mm) and a higher distance threshold (100Â mm). In addition, MDD patients showed increased local FCS in the putamen at higher distance thresholds (80-100Â mm). These findings suggest that local functional connectivity abnormalities in MDD are dependent on distance thresholds and that future studies should take the distance thresholds into account when measuring local functional connectivity in MDD.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Psychiatry Research: Neuroimaging - Volume 270, 30 December 2017, Pages 80-85
Journal: Psychiatry Research: Neuroimaging - Volume 270, 30 December 2017, Pages 80-85
نویسندگان
Jiajia Zhu, Xiaodong Lin, Chongguang Lin, Chuanjun Zhuo,