Positive reinforcement modulates fronto-limbic systems subserving emotional interference in adolescents

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Fronto-limbic systems are crucial for resisting emotional distraction and maintaining goal-directed behavior.
• Dysfunctional fronto-limbic systems are linked to psychopathology, but most research is in adults.
• Understanding these systems in adolescents is vital for developmental psychopathology research.

Purpose of the Study:

• To investigate fronto-limbic system functioning during emotional interference in adolescents.
• To determine if positive reinforcement can modulate neural responses to emotional distraction.
• To explore potential applications for reinforcement-based attention training in youth.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used in 14 healthy adolescents (ages 9-15).
• Participants completed a delayed working memory task with emotional distracters (neutral, negative).
• Positive reinforcement (monetary reward) was applied to correct responses in certain conditions.

Main Results:

• Negative distracters led to reduced behavioral performance and increased amygdala and prefrontal cortex activation.
• Positive reinforcement improved accuracy and reaction times.
• Reinforcement counteracted negative distracter effects, reducing fronto-limbic activation.

Conclusions:

• Findings extend adult emotional interference research to adolescents.
• Positive reinforcement can mitigate the impact of emotional distracters on cognitive performance.
• Reinforcement-based interventions show promise for reducing emotional attention biases in anxious youth.