eISSN: 1896-9151
ISSN: 1734-1922
Archives of Medical Science
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SCImago Journal & Country Rank
5/2019
vol. 15
 
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abstract:
Clinical research

Altered brain network centrality in patients with late monocular blindness: a resting-state fMRI study

Xin Huang
,
Hai-Jun Li
,
De-Chang Peng
,
Lei Ye
,
Qi-Chen Yang
,
Yu-Lin Zhong
,
Fu-Qing Zhou
,
Yi Shao

Arch Med Sci 2019; 15 (5): 1301–1307
Online publish date: 2019/08/13
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Introduction
The aim of the study was to investigate the underlying functional network brain activity changes in patients with late monocular blindness (MB) and the relationship with their clinical features using the voxel-wise degree centrality (DC) method.

Material and methods
A total of 32 patients with MB (25 males and 7 females), and 32 healthy controls (HCs) (25 males and 7 females) closely matched in age, sex, and education, underwent resting-state functional magnetic resonance imaging scans. The DC method was used to assess local features of spontaneous brain activity. Correlation analysis was performed to explore the relationships between the observed mean DC signal values of the different areas and clinical features in these patients.

Results
Compared with HCs, MB patients had significantly lower DC values in the bilateral cuneus/V1/V2, and significantly higher DC values in the left inferior temporal gyrus and bilateral medial frontal gyrus. However, there was no relationship between the observed mean DC values of the different brain areas and the behavioral performance.

Conclusions
Late monocular blindness involves brain function network dysfunction in many regions, which might indicate impairment of the visual cortex and other vision-related brain regions in the MBs.

keywords:

monocular blindness, voxel-wise degree centrality, brain-activity changes

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