Scientific article
English

Self-relevance processing in the human amygdala: gaze direction, facial expression, and emotion intensity

Published inEmotion, vol. 9, no. 6, p. 798-806
Publication date2009
Abstract

How the processing of emotional expression is influenced by perceived gaze remains a debated issue. Discrepancies between previous results may stem from differences in the nature of stimuli and task characteristics. Here we used a highly controlled set of computer-generated animated faces combining dynamic emotional expressions with varying intensity, and gaze shifts either directed at or averted from the observer. We predicted that perceived self-relevance of fearful faces would be higher with averted gaze-signaling a nearby danger; whereas conversely, direct gaze would be more relevant for angry faces-signaling aggressiveness. This interaction pattern was observed behaviorally for emotion intensity ratings, and neurally for functional magnetic resonance imaging activation in amygdala, as well as fusiform and medial prefrontal cortices, but only for mild- and not high-intensity expressions. These results support an involvement of human amygdala in the appraisal of self-relevance and reveal a crucial role of expression intensity in emotion and gaze interactions.

Keywords
  • Adult
  • Aggression/physiology
  • Amygdala/ physiology
  • Anger/physiology
  • Emotions/ physiology
  • Eye Movements/ physiology
  • Facial Expression
  • Facial Muscles/physiology
  • Fear/physiology
  • Female
  • Happiness
  • Humans
  • Magnetic Resonance Imaging
  • Male
Research groups
Citation (ISO format)
NDIAYE, Karim Babacar Joseph, SANDER, David, VUILLEUMIER, Patrik. Self-relevance processing in the human amygdala: gaze direction, facial expression, and emotion intensity. In: Emotion, 2009, vol. 9, n° 6, p. 798–806. doi: 10.1037/a0017845
Identifiers
Journal ISSN1528-3542
651views
0downloads

Technical informations

Creation06/08/2010 10:47:21
First validation06/08/2010 10:47:21
Update time14/03/2023 15:57:33
Status update14/03/2023 15:57:33
Last indexation29/10/2024 16:25:19
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack