The role of ventromedial prefrontal cortex volume in the association of expressive suppression and externally oriented thinking

被引:6
作者
Li, Xu [1 ]
Lu, Jiamei [1 ]
Li, Bingbing [2 ,3 ]
Li, Haijiang [1 ]
Jin, Li [1 ]
Qiu, Jiang [2 ,4 ]
机构
[1] Shanghai Normal Univ, Dept Psychol, Shanghai 200234, Peoples R China
[2] Southwest Univ, Sch Psychol, Chongqing 400715, Peoples R China
[3] Southwest Univ, Ctr Mental Hlth Educ, Chongqing 400715, Peoples R China
[4] Key Lab Cognit & Personal SWU, Minist Educ, Chongqing 400715, Peoples R China
基金
中国国家自然科学基金;
关键词
Alexithymia; Emotional regulation; Voxel-based morphometry; Difficulty identifying feelings; Difficulty describing feelings; TORONTO-ALEXITHYMIA-SCALE; GRAY-MATTER VOLUME; COGNITIVE REAPPRAISAL; FACTORIAL STRUCTURE; GENDER-DIFFERENCES; CROSS-VALIDATION; CHINESE VERSION; ITEM SELECTION; EMOTION; RELIABILITY;
D O I
10.1016/j.jad.2017.06.054
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Background: Studies have suggested that expressive suppression (ES) is linked to externally oriented thinking (ROT) through the ventromedial prefrontal cortex (vmPFC), and there are gender differences in their association. The present structural magnetic resonance imaging study was to investigate the neural bases of ES and EOT and their association in females versus males in a Chinese college sample. Methods: A total of 142 participants (83 females) were enrolled, and they completed the ES subscale of the Emotion Regulation Questionnaire, 20-item Toronto Alexithymia Scale, and anatomical scanning. Voxel-based morphometry, region of interest, and whole brain analyses with peak-level significance (family-wise error corrected at p <.05) were conducted to investigate the association of gray matter volume (GMV) variations with ES and EOT. A bootstrapping analysis was conducted to examine the role of vmPFC volume in the ES-EOT association. Results: The ES scores were positively linked to the GMV of the vmPFC in females and negatively related to right dorsolateral PFC volume in males. The EOT scores were positively correlated with the GMV of the vmPFC in females and supplementary motor area in males. Furthermore, vmPFC volume mediated the relationship between ES and EOT Limitations: The cross-sectional design limited causal conclusions. Conclusions: The vmPFC may be the only neural base of ES and EOT and their association. In addition, these results were sex-specific.
引用
收藏
页码:112 / 119
页数:8
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