A double dissociation between mood states and personality traits in the anterior cingulate
A double dissociation between mood states and personality traits in the anterior cingulate
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DOI：
10.1037/0735-7044.118.5.897
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发表时间：
2004-10-01
影响因子：
1.9
通讯作者：
Constable, RT
中科院分区：
文献类型：
--
作者：
Canli, T;Amin, Z;Constable, RT
神经质和外倾性分别是与消极和积极情绪状态相关的人格特质，混淆了可能影响大脑对情绪刺激反应的特质和状态因素。作者使用功能磁共振成像和情绪Stroop注意任务分离这些因素：前扣带回（AC）对积极刺激的反应随人格特质而变化，但不随情绪状态而变化，而AC对消极刺激的反应随情绪状态而变化，但不随人格特质而变化。负性情绪（而非人格特质）也增加了AC与其他区域之间的功能连接。因此，AC激活的变化可以归因于所有的主体间变量（外倾性）时，积极的刺激和主体内变量（情绪）时，响应负刺激。前者可以解释外向者和内向者之间的稳定差异。后者可以提供一种自适应机制，以扩大个体的动态范围，以响应潜在的危险或威胁刺激。
Neuroticism and extraversion are personality traits associated with negative and positive mood states, respectively, confounding trait and state factors that may affect brain responses to emotional stimuli. The authors dissociated these factors using fMRI and the emotional Stroop attention task: Anterior cingulate (AC) response to positive stimuli varied as a function of personality trait, but not mood state, whereas AC response to negative stimuli varied as a function of mood state, but not personality trait. Negative mood, but not personality trait, also increased the functional connectivity between AC and other regions. Variance in AC activation can thus be ascribed to all intersubject variable (extraversion) when responding to positive stimuli and an intrasubject variable (mood) when responding to negative Stimuli. The former may explain stable differences between extraverts and introverts. The latter may provide an adaptive mechanism to expand an individual's dynamic range in response to potentially dangerous or threatening stimuli.