Personality-dependent dissociation of absolute and relative loss processing in orbitofrontal cortex

Area of Science:

• Neuroscience
• Cognitive Psychology
• Neuroimaging

Background:

• Negative outcomes trigger absolute or relative losses with distinct motivational and emotional impacts.
• Personality factors, including neuroticism and introversion, are known to moderate loss consequences.
• The underlying neural mechanisms of this personality-based moderation remain largely unexplored.

Purpose of the Study:

• To investigate the neuronal basis of financial loss processing.
• To examine how personality traits modulate the brain's response to different types of losses.
• To identify specific brain regions involved in the interaction between personality and loss perception.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed during a choice task.
• Participants underwent brain scanning while making decisions with financial outcomes.
• Absolute and relative financial losses were differentiated by revealing chosen and unchosen outcomes sequentially.

Main Results:

• Increased neuroticism correlated with heightened activity in the left lateral orbitofrontal cortex (OFC) for relative losses.
• Increased introversion correlated with heightened activity in the right lateral OFC for absolute losses.
• A dissociation was observed in the lateral OFC's response to absolute versus relative losses based on personality dimensions.

Conclusions:

• Personality traits significantly influence how the brain processes financial losses.
• The lateral orbitofrontal cortex (OFC) plays a crucial role in mediating the effects of personality on loss-related neural processing.
• Distinct personality dimensions (neuroticism, introversion) are associated with differential neural responses to absolute and relative financial losses.