Neural correlates of frustration.

Area of Science:

• Neuroscience
• Psychology
• Decision-making

Background:

• Reward omission in humans involves distinct allocentric (learning) and egocentric (emotional) effects.
• The egocentric effect, often termed frustration, is a significant emotional reaction to unexpected lack of reward.
• Understanding the neural basis of this frustration is crucial for comprehending human emotional processing.

Purpose of the Study:

• To investigate the neural correlates of the egocentric effect (frustration) during monetary reward omission.
• To differentiate the brain activity associated with the emotional response from the learning-related prediction error signal.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed to monitor brain activity.
• Participants underwent conditions of monetary reward receipt versus omission.
• Analysis focused on brain activation patterns contrasting reward omission against reward receipt.

Main Results:

• A decrease in ventral striatal activation was observed during reward omission, aligning with prediction error theory.
• Increased activation was detected in the right anterior insula and right ventral prefrontal cortex during reward omission.
• These activated regions are known to be involved in processing emotional pain.

Conclusions:

• The study provides neural evidence for the egocentric effect of reward omission, identified as frustration.
• The right anterior insula and right ventral prefrontal cortex serve as neural correlates for this emotional response.
• Findings contribute to distinguishing emotional and learning-related neural processes in reward anticipation.