🧠 At outcome time, brain activity highlighted a different network — involving the bilateral parietal cortex.

→ Its activity correlated with the structure learning signal.

🧠 Results showed that first-stage decisions — the forward-looking ones — recruited a network centered on the parahippocampal cortex.

→ This region appears crucial for model-based planning.

We used a two-step reinforcement learning task

At each first-stage choice, participants had to think ahead:
– Should I go for the immediate reward?
– Or choose an option that brings me to a better future state?