Kazuyuki Samejima

Nonlinear influence of reward volatility on arbitration between multiple learning strategies reflects cost-benefit optimization

This study shows that reward volatility nonlinearly affects the balance between model-free and model-based learning strategies, with model-based learning being most effective at intermediate volatility levels.

Emergence of preference coding in the macaque lateral prefrontal cortex by neurofeedback of unit activity related to working memory

This study uses neurofeedback of LPFC unit activity to show that neurons can dynamically adapt their activity and performance during working memory tasks.