title: Regional homogeneity changes in social anxiety disorder: a resting-state fMRI study.
abstract: The previous task-based or resting perfusion studies in social anxiety disorder (SAD) patients have highlighted specific differences in brain response. Little is known about the changes in the local synchronization of spontaneous functional magnetic resonance imaging (fMRI) blood oxygen level-dependent (BOLD) signals that occur in SAD during the resting state. We investigated altered neural activity in the resting state using a regional homogeneity (ReHo) analysis on 20 SAD and 20 healthy controls (HC). Compared with HC, SAD patients exhibited decreased coherence (ReHo) in the bilateral angular gyrus and the left medial prefrontal cortex within the default mode network (DMN), suggesting functional impairment of the perception of socially relevant emotional state and self-related mental representations; and also in the right dorsolateral prefrontal cortex and right inferior parietal gyrus within the central-executive network (CEN), reflecting the deficit of cognitive control of social anxiety. Significantly increased coherence (ReHo) was found in the left middle occipital gyrus, which would be consistent with their hypervigilance and hyperprosexia to the social communication even in the resting state. Our results might supply a novel way to look into neuro-pathophysiological mechanisms in SAD patients.
authors.affiliation: Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.
authors.forename: Changjian
authors.initials: C
authors.lastname: Qiu
authors.forename: Wei
authors.initials: W
authors.lastname: Liao
authors.forename: Jurong
authors.initials: J
authors.lastname: Ding
authors.forename: Yuan
authors.initials: Y
authors.lastname: Feng
authors.forename: Chunyan
authors.initials: C
authors.lastname: Zhu
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Nie
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Huafu
authors.initials: H
authors.lastname: Chen
authors.forename: Qiyong
authors.initials: Q
authors.lastname: Gong
mesh_terms: D000328:Adult; D001008:Anxiety Disorders / Q000473:pathology* / Q000503:physiopathology / Q000523:psychology; D001921:Brain / Q000098:blood supply* / Q000473:pathology; D001931:Brain Mapping; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D010100:Oxygen / Q000097:blood; D012146:Rest / Q000502:physiology*; D012919:Social Behavior; D013223:Statistics as Topic; D055815:Young Adult
chemical_list: D010100:Oxygen