Motif study of brain directed functional network in first-episode schizophrenia.
10.3969/j.issn.1002-0152.2019.06.007
- VernacularTitle:首发精神分裂症患者脑有向功能网络的模体研究
- Author:
Man XU
1
;
Jingliang CHENG
;
Yong ZHANG
;
Xueqin SONG
;
Kangkang XUE
;
Lekai. LUO
Author Information
1. 郑州大学第一附属医院磁共振科(郑州450052)
- Keywords:
First-episode schizophrenia;
Resting-state functional magnetic resonance imaging;
Brain network;
Directed connection Motif
- From:
Chinese Journal of Nervous and Mental Diseases
2019;45(6):351-355
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the difference of the motif patterns in brain directed functional network between first-episode schizophrenia patients and healthy controls, and to analysis the alterations of the underlying information flow patterns in patient networks. Methods The resting-state functional MRI data were collected from 44 first-episode schizophrenia patients and 39 healthy controls. The convergent cross mapping approach was employed to measure the causality connections between brain regions, and the directed functional networks were constructed. The calculations of the frequency and probability spectrum of all motif classes were performed at both whole brain and modular connected level. The between-group difference was then calculated. Results Compared with healthy controls, the frequency spectrum values of all motif classes in schizophrenia were significantly reduced (P＜0.05, FDR corrected), the Z scores of frequency spectrum of were decreased in chain-like motifs and increased in loop-like motifs. In the two groups, the probability values were higher at modular level than at whole brain level in two loop-like motifs (P＜0.05). Conclusion The present study revealed a loss in brain directed functional connections and abnormal alterations in the basic information flow patterns in first-episode schizophrenia brain.
