The gut and heart's role in reward processing.

Area of Science:

• Neuroscience
• Psychiatry
• Physiology

Background:

• Traditional models of reward focus on central neural circuits.
• Emerging evidence highlights the role of peripheral bodily signals in reward.
• This peripheral influence impacts emotions, learning, and well-being.

Purpose of the Study:

• To review the gut-brain and heart-brain interfaces in reward processing.
• To delineate their contributions across different reward phases.
• To offer insights into their bioenergetic significance for neuropsychiatric health.

Main Methods:

• Literature review of studies on gut-brain and heart-brain axes.
• Analysis of reward processing phases (anticipation, consumption, outcome evaluation).
• Integration of findings within adaptive and clinical contexts.

Main Results:

• Peripheral signals from the gut and heart significantly modulate central reward pathways.
• These interfaces play distinct roles in various stages of reward experience.
• Bioenergetic factors of these axes are crucial for maintaining reward homeostasis.

Conclusions:

• The gut-brain and heart-brain axes are integral to reward processing.
• A mind-body medicine approach, considering these interfaces, can advance understanding and treatment of neuropsychiatric disorders.
• Future research should focus on the bioenergetic and adaptive roles of these peripheral systems.