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首页> 外文期刊>BMC Neuroscience >Neural basis underlying the trait of attachment anxiety and avoidance revealed by the amplitude of low-frequency fluctuations and resting-state functional connectivity
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Neural basis underlying the trait of attachment anxiety and avoidance revealed by the amplitude of low-frequency fluctuations and resting-state functional connectivity

机译：神经基础依赖于附着焦虑的特性和避免的低频波动幅度和休息状态的功能连接

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Attachment theory demonstrates that early attachment experience shapes internal working models with mental representations of self and close relationships, which affects personality traits and interpersonal relationships in adulthood. Although research has focused on brain structural and functional underpinnings to disentangle attachment styles in healthy individuals, little is known about the spontaneous brain activity associated with self-reported attachment anxiety and avoidance during the resting state. One hundred and nineteen individuals participated in the study, completing the Experience in Close Relationship scale immediately after an 8-min fMRI scanning. We used the resting-state functional magnetic resonance imaging (rs-fMRI) signal of the amplitude of low-frequency fluctuation and resting-state functional connectivity to identify attachment-related regions and networks. Consequently, attachment anxiety is closely associated with the amplitude of low-frequency fluctuations in the right posterior cingulate cortex, over-estimating emotional intensity and exaggerating outcomes. Moreover, the functional connectivity between the posterior cingulate cortex and fusiform gyrus increases detection ability for potential threat or separation information, facilitating behavior motivation. The attachment avoidance is positively correlated with the amplitude of low-frequency fluctuation in the bilateral lingual gyrus and right postcentral and negatively correlated with the bilateral orbital frontal cortex and inferior temporal gyrus. Functional connection with attachment avoidance contains critical nodes in the medial temporal lobe memory system, frontal-parietal network, social cognition, and default mode network necessary to deactivate the attachment system and inhibit attachment-related behavior. These findings clarify the amplitude of low-frequency fluctuation and resting-state functional connectivity neural signature of attachment style, associated with attachment strategies in attachment anxiety and attachment avoidance individuals. These findings may improve our understanding of the pathophysiology of the attachment-related disorder.
机译：附件理论表明，早期附着经验塑造了自我和密切关系的心理表征的内部工作模型，这影响了成年期的人格特征和人际关系。虽然研究专注于脑结构和功能性的支撑，但在健康个体中解散陈旧的贴片曲线，但对与自我报告的附着焦虑相关的自发性脑活动和避免期间的避免感到困难。一百十九个人参加了这项研究，在8分钟的FMRI扫描后立即完成了密切关系规模的经验。我们使用静止状态功能磁共振成像（RS-FMRI）信号的低频波动和休息状态功能连接，以识别与附件相关的区域和网络。因此，附着焦虑与右侧铰接皮质的低频波动的幅度密切相关，过度估计情绪强度和夸大的结果。此外，后铰接皮层和梭形回值之间的功能连通性会增加潜在威胁或分离信息的检测能力，促进行为动机。附接避免与双侧舌旋转和后和后复态的低频波动的幅度呈正相关，并与双侧轨道额叶皮质和劣质颞弧菌的呈负相关。与附件避免的功能连接包含内侧时间叶内存系统中的关键节点，前视网网，社会认知和默认模式网络，以便停用附件系统并禁止与附件相关的行为。这些发现阐明了附着风格的低频波动和休息状态功能连接神经签名的幅度，与附着焦虑和附着避免个体的附着策略相关。这些发现可以改善我们对相关疾病的病理生理学的理解。

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