UNIGE document Scientific Article
previous document  unige:645  next document
add to browser collection
Title

Individual attachment style modulates human amygdala and striatum activation during social appraisal

Authors
Published in PLOS ONE. 2008, vol. 3, no. 8, p. e2868
Abstract 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.
Keywords Brain MappingCorpus StriatumEmotionsFacial ExpressionFeedbackFunctional LateralityHumansMagnetic Resonance ImagingReaction TimeSocial BehaviorSocial Support
Identifiers
PMID: 18682729
Full text
Article (Author postprint) (294 Kb) - public document Free access
Structures
Research groups Affective sciences
Mécanismes cérébraux du comportement et des fonctions cognitives (701)
Citation
(ISO format)
VRTICKA, Pascal et al. Individual attachment style modulates human amygdala and striatum activation during social appraisal. In: PLOS ONE, 2008, vol. 3, n° 8, p. e2868. https://archive-ouverte.unige.ch/unige:645

288 hits

102 downloads

Update

Deposited on : 2009-01-19

Export document
Format :
Citation style :