bioRxivJClub
Striatal Value Signals Track Progress Toward a Goal During Planning
bioRxiv · · Preprint · Open access
Luzyanin, Konovalov
Abstract ↗AI summary
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Striatal and precuneus fMRI activity tracked the prospective value of chosen options, increasing with progress toward completing a card set during planning.
- Why it matters: Goal-based decisions require integrating changing future value with immediate rewards, but the neural computations supporting this “goal gradient” remain unclear.
- What they did: Participants repeatedly chose between two cards with immediate points and uncertain prospective value; computational modeling linked prospective value to set-completion progress, and fMRI tested value-related signals.
- The result: ROI activity supported a goal-gradient account more than full forward planning: striatal/precuneus tracked prospective value, while dorsomedial/insular regions tracked the value of the rejected option and peaked when choices opposed model-based value.
The findingWhy it mattersWhat they didThe result
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