Individual attachment style modulates human amygdala and striatum activation during social appraisal.
Individual attachment style modulates human amygdala and striatum activation during social appraisal.
复制标题
DOI：
10.1371/journal.pone.0002868
复制
发表时间：
2008-08-06
期刊：
影响因子：
3.7
通讯作者：
Vuilleumier P
中科院分区：
文献类型：
--
作者：
Vrticka P;Andersson F;Grandjean D;Sander D;Vuilleumier P
成人依恋类型是指强烈影响情感纽带和对社会伙伴反应的个体人格特征。行为研究表明，成人依恋类型反映了对支持或冲突社会信号敏感性的深刻差异，但这种差异背后的神经基质仍未确定。利用功能性磁共振成像（fMRI），我们研究了在社交游戏环境中，依恋类型的三种典型原型（安全型、回避型、焦虑型）如何调节大脑对面部表情的反应，这些表情传达了关于任务表现的积极或消极反馈（支持或敌对）。纹状体和腹侧被盖区的激活在收到笑脸信号的积极反馈时得到增强，但在回避型依恋的参与者中则有所减少，这表明他们对社会奖励相对无动于衷。相反，与负面反馈相关的愤怒面孔会诱发左杏仁核反应，并与焦虑依恋呈正相关，表明对社会惩罚的敏感性增加。安全依恋在纹状体和杏仁体中显示镜像效应，但没有其他特异性关联。这些结果揭示了涉及奖励和威胁处理的大脑系统在成人依恋类型的生物学基础中所起的关键作用，并为心理学模型提供了新的支持，这些模型假设了两个独立的情感维度来解释这些个体差异，分别以腹侧纹状体和杏仁核回路为中心。这些发现还表明，大脑对面部表情的反应并不仅仅是由面部特征驱动的，而是由当前社会背景下面部表情的个人意义决定的。通过将成人依恋的基本心理社会维度与大脑功能联系起来，我们的研究结果不仅证实了它们的生物学基础，而且有助于理解它们对行为的影响。
Adult attachment style refers to individual personality traits that strongly influence emotional bonds and reactions to social partners. Behavioral research has shown that adult attachment style reflects profound differences in sensitivity to social signals of support or conflict, but the neural substrates underlying such differences remain unsettled. Using functional magnetic resonance imaging (fMRI), we examined how the three classic prototypes of attachment style (secure, avoidant, anxious) modulate brain responses to facial expressions conveying either positive or negative feedback about task performance (either supportive or hostile) in a social game context. Activation of striatum and ventral tegmental area was enhanced to positive feedback signaled by a smiling face, but this was reduced in participants with avoidant attachment, indicating relative impassiveness to social reward. Conversely, a left amygdala response was evoked by angry faces associated with negative feedback, and correlated positively with anxious attachment, suggesting an increased sensitivity to social punishment. Secure attachment showed mirror effects in striatum and amygdala, but no other specific correlate. These results reveal a critical role for brain systems implicated in reward and threat processing in the biological underpinnings of adult attachment style, and provide new support to psychological models that have postulated two separate affective dimensions to explain these individual differences, centered on the ventral striatum and amygdala circuits, respectively. These findings also demonstrate that brain responses to face expressions are not driven by facial features alone but determined by the personal significance of expressions in current social context. By linking fundamental psychosocial dimensions of adult attachment with brain function, our results do not only corroborate their biological bases but also help understand their impact on behavior.
登录
查看更多内容
影响因子：
4.8
作者：
Lemche, Erwin;Giampietro, Vincent P.;Phillips, Mary L.
通讯作者：
Phillips, Mary L.
影响因子：
2.8
作者：
Kurdek, LA
通讯作者：
Kurdek, LA
影响因子：
2.5
作者：
Bray, Signe;O'Doherty, John
通讯作者：
O'Doherty, John
影响因子：
7.6
作者：
HAZAN, C;SHAVER, P
通讯作者：
SHAVER, P
影响因子：
5.7
作者：
Gillath, O;Bunge, SA;Mikulincer, M
通讯作者：
Mikulincer, M