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静息状态下前扣带回皮层和楔前叶之间的同步性与神经性厌食症和神经性贪食症患者的身体形象担忧有关。

Resting-state synchrony between anterior cingulate cortex and precuneus relates to body shape concern in anorexia nervosa and bulimia nervosa.

机构信息

Department of Psychiatry, Yonsei University College of Medicine, Republic of Korea; Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Republic of Korea.

Department of Biomedical Engineering, Keimyung University, Republic of Korea.

出版信息

Psychiatry Res. 2014 Jan 30;221(1):43-8. doi: 10.1016/j.pscychresns.2013.11.004. Epub 2013 Nov 20.

Abstract

Cortical areas supporting cognitive control and salience demonstrate different neural responses to visual food cues in patients with eating disorders. This top-down cognitive control, which interacts with bottom-up appetitive responses, is tightly integrated not only in task conditions but also in the resting-state. The dorsal anterior cingulate cortex (dACC) is a key node of a large-scale network that is involved in self-referential processing and cognitive control. We investigated resting-state functional connectivity of the dACC and hypothesized that altered connectivity would be demonstrated in cortical midline structures involved in self-referential processing and cognitive control. Seed-based resting-state functional connectivity was analyzed in women with anorexia nervosa (N=18), women with bulimia nervosa (N=20) and age matched healthy controls (N=20). Between group comparisons revealed that the anorexia nervosa group exhibited stronger synchronous activity between the dACC and retrosplenial cortex, whereas the bulimia nervosa group showed stronger synchronous activity between the dACC and medial orbitofrontal cortex. Both groups demonstrated stronger synchronous activity between the dACC and precuneus, which correlated with higher scores of the Body Shape Questionnaire. The dACC-precuneus resting-state synchrony might be associated with the disorder-specific rumination on eating, weight and body shape in patients with eating disorders.

摘要

支持认知控制和突显的皮质区域在进食障碍患者中对视觉食物线索表现出不同的神经反应。这种自上而下的认知控制与自下而上的食欲反应相互作用,不仅在任务条件下,而且在静息状态下都紧密结合在一起。背侧前扣带皮层(dACC)是一个涉及自我参照处理和认知控制的大型网络的关键节点。我们研究了 dACC 的静息状态功能连接,并假设在涉及自我参照处理和认知控制的皮质中线结构中会表现出改变的连接。对神经性厌食症患者(N=18)、神经性贪食症患者(N=20)和年龄匹配的健康对照组(N=20)进行了基于种子的静息状态功能连接分析。组间比较显示,神经性厌食症组的 dACC 与后扣带回之间的同步活动较强,而神经性贪食症组的 dACC 与内侧眶额皮层之间的同步活动较强。两组的 dACC-楔前叶之间的同步活动均较强,与身体形态问卷的较高分数相关。dACC-楔前叶静息状态同步性可能与进食障碍患者对进食、体重和身体形态的特定沉思有关。

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