title: Amygdala involvement in self-blame regret.
abstract: Regret-related brain activity is dependent on free choice, but it is unclear whether this activity is a function of more subtle differences in the degree of responsibility a decision-maker exerts over a regrettable outcome. In this experiment, we show that trial-by-trial subjective ratings of regret depend on a higher subjective sense of responsibility, as well as being dependent on objective responsibility. Using fMRI we show an enhanced amygdala response to regret-related outcomes when these outcomes are associated with high, as compared to low, responsibility. This enhanced response was maximal in participants who showed a greater level of enhancement in their subjective ratings of regret engendered by an objective increase in responsibility. Orbitofrontal and cingulate cortex showed opposite effects, with an enhanced response for regret-related outcomes when participants were not objectively responsible. The findings indicate that the way the brain processes regret-related outcomes depends on both objective and subjective aspects of responsibility, highlighting the critical importance of the amygdala.
authors: University College London, London, UK. a.nicolle@fil.ion.ucl.ac.uk
authors: Antoinette
authors: A
authors: Nicolle
authors: Dominik R
authors: DR
authors: Bach
authors: Chris
authors: C
authors: Frith
authors: Raymond J
authors: RJ
authors: Dolan
mesh_terms: D000328:Adult; D000679:Amygdala / Q000502:physiology*; D001931:Brain Mapping; D003657:Decision Making / Q000502:physiology*; D004644:Emotions / Q000502:physiology*; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D012941:Social Responsibility; D055815:Young Adult