Neural Correlates of Reward Processing in Typical and Atypical Development

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Atypical development, including preterm birth and autism spectrum disorder (ASD), is linked to difficulties in evaluating rewarding stimuli.
• These challenges may stem from impaired maturation of brain regions crucial for reward processing and cognitive control.

Purpose of the Study:

• To investigate age-related differences in brain activation during a reward-based task in typically and atypically developing children.
• To explore the neural underpinnings of reward processing and cognitive control in children with and without developmental atypicalities.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to scan 58 children aged 6-12 years.
• Participants completed a set-shifting task involving monetary reward stimuli.
• Brain activation patterns in cognitive control and reward regions were analyzed.

Main Results:

• Typically developing children exhibited age-related increases in activation within cognitive control centers, with less pronounced changes in reward regions.
• Atypically developing children showed no significant age-related changes in activation in these brain areas.
• Maturational disturbances in frontostriatal regions were observed in atypically developing children.

Conclusions:

• Age-related maturation of cognitive control and reward brain regions differs between typically and atypically developing children.
• Impaired maturation in frontostriatal pathways may explain task-based activation differences in atypical development.
• These findings highlight potential neural targets for interventions in developmental disorders.