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首页> 美国卫生研究院文献>Social Cognitive and Affective Neuroscience >Brain activity mediates the relation between emotional but not instrumental support and trait loneliness
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Brain activity mediates the relation between emotional but not instrumental support and trait loneliness

机译：大脑活动介导情感支持而非特质孤独与情感支持之间的关系

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摘要

Loneliness results from lacking satisfied social connections. However, little is known how trait loneliness, which is a stable personal characteristic, is influenced by different types of social support (i.e. emotional and instrumental support) through the brain activity associated with loneliness. To explore these questions, data of resting-state functional magnetic resonance imaging (R-fMRI) of 92 healthy participants were analyzed. We identified loneliness-related brain regions by correlating participants’ loneliness scores with amplitudes of low-frequency fluctuation (ALFF) of R-fMRI data. We then conducted mediation analyses to test whether the negative relation between each type of social support and loneliness was explained via the neural activity in the loneliness-related brain regions. The results showed that loneliness was positively related to the mean ALFF value within right inferior temporal gyrus (ITG). In addition, the negative relation between emotional support and loneliness was explained by a decrease in the spontaneous neural activity within right ITG but this pattern was not observed for instrumental support. These results suggest the importance of social information processing on trait loneliness and highlight the need to differentiate the functions of different types of social support on mental health from a neural perspective.
机译：孤独感是由于缺乏满意的社交关系所致。然而，很少有人知道特质孤独是一种稳定的个人特征，它是如何通过与孤独相关的大脑活动受到不同类型的社会支持（即情感和工具支持）的影响的。为了探讨这些问题，分析了92位健康参与者的静息状态功能磁共振成像（R-fMRI）数据。我们通过将参与者的孤独感评分与R-fMRI数据的低频波动幅度（ALFF）进行关联来识别与孤独感相关的大脑区域。然后，我们进行了中介分析，以测试是否通过孤独相关脑区域的神经活动解释了每种类型的社会支持与孤独之间的负相关关系。结果表明，孤独感与右下颞回（ITG）的平均ALFF值呈正相关。另外，情绪支持与孤独之间的负相关可以通过右ITG内自发神经活动的减少来解释，但是对于工具支持而言，这种模式并未观察到。这些结果表明社会信息处理对特质孤独感的重要性，并强调需要从神经学角度区分不同类型的社会支持对心理健康的作用。

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