Neurobiological changes of schizotypy: evidence from both volume-based morphometric analysis and resting-state functional connectivity.

Abstract:

:The current study sought to examine the underlying brain changes in individuals with high schizotypy by integrating networks derived from brain structural and functional imaging. Individuals with high schizotypy (n = 35) and low schizotypy (n = 34) controls were screened using the Schizotypal Personality Questionnaire and underwent brain structural and resting-state functional magnetic resonance imaging on a 3T scanner. Voxel-based morphometric analysis and graph theory-based functional network analysis were conducted. Individuals with high schizotypy showed reduced gray matter (GM) density in the insula and the dorsolateral prefrontal gyrus. The graph theoretical analysis showed that individuals with high schizotypy showed similar global properties in their functional networks as low schizotypy individuals. Several hubs of the functional network were identified in both groups, including the insula, the lingual gyrus, the postcentral gyrus, and the rolandic operculum. More hubs in the frontal lobe and fewer hubs in the occipital lobe were identified in individuals with high schizotypy. By comparing the functional connectivity between clusters with abnormal GM density and the whole brain, individuals with high schizotypy showed weaker functional connectivity between the left insula and the putamen, but stronger connectivity between the cerebellum and the medial frontal gyrus. Taken together, our findings suggest that individuals with high schizotypy present changes in terms of GM and resting-state functional connectivity, especially in the frontal lobe.

journal_name

Schizophr Bull

journal_title

Schizophrenia bulletin

authors

Wang Y,Yan C,Yin DZ,Fan MX,Cheung EF,Pantelis C,Chan RC

doi

10.1093/schbul/sbu178

subject

Has Abstract

pub_date

2015-03-01 00:00:00

pages

S444-54

eissn

0586-7614

issn

1745-1701

pii

sbu178

journal_volume

41 Suppl 2

pub_type

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