Understanding the development of a functional brain circuit: reward processing as an illustration

Area of Science:

• Neuroscience
• Developmental Psychology
• Psychiatry

Background:

• Aberrant reward processing is a hallmark of developmental psychiatric disorders.
• Current understanding relies heavily on adult models, limiting insight into early development.
• Few studies examine reward system development across infancy and childhood.

Purpose of the Study:

• To reframe the study of early reward processing within developmental transitions.
• To investigate age-specific brain network functions in developing reward systems.
• To explore how early reward circuit function impacts later development and pathology.

Main Methods:

• Literature review of developing reward systems.
• Analysis of age-specific definitions of rewarding stimuli.
• Examination of neural reward circuit function across developmental stages.
• Inquiry into the impact of early circuit perturbation on later function.

Main Results:

• Current understanding of reward processing is adult-centric.
• Developmental transitions necessitate age-specific approaches to reward system study.
• Early reward circuit function is distinct and crucial for adaptive behaviors.

Conclusions:

• A developmental niche-centered framework is essential for studying early reward processing.
• This framework aids in understanding developmental research questions beyond reward.
• It provides insights into how developmental disturbances lead to psychiatric pathology.