[Reward processing and psychopathology].

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Science

Context:

• Reward processing, involving the orbitofrontal cortex, striatum, and limbic system, underpins reinforcement learning and decision-making.
• Dysfunctional reward processing is a known factor in substance abuse and pathological gambling.
• Emerging research indicates reward processing deficits in various psychiatric conditions beyond addiction.

Purpose:

• To review and discuss experimental findings on reward processing dysfunctions in psychiatric disorders.
• To explore the association between reward processing deficits and conditions such as ADHD, mood disorders, eating disorders, and cluster B personality disorders.
• To identify future research directions for clarifying disorder-specific reward processing abnormalities.

Summary:

• Reward processing, essential for learning and decision-making, relies on specific brain circuits.
• While known to be impaired in addiction, reward processing dysfunction is now recognized in other psychiatric disorders.
• This review examines evidence linking conditions like ADHD, mood, eating, and personality disorders to altered reward system function.

Impact:

• Highlights the expanded role of reward processing deficits across a wider spectrum of psychiatric conditions.
• Suggests potential for novel diagnostic and therapeutic targets based on reward system function.
• Underscores the need for further research to differentiate reward processing abnormalities across psychiatric diagnoses.