Figure 5.
Neural Adaptation Correlates with Behavioral Adaptation and Performance
(A) Superior behavioral adaptation to reward variability is associated with improved neural adaptation in the SN/VTA complex and ventral striatum. To quantify behavioral and neural adaptation, we determined whether SD−1 was a significant predictor of learning rates and RPE slopes: β0 + β1 SD−1. The higher R2 is, the better SD serves as a predictor of learning rate and RPEs.
(B) Superior neural adaptation in the SN/VTA complex and ventral striatum correlates with decreases in performance error (|prediction − EV| averaged across all SDs and trials).
SN/VTA, substantia nigra/ventral tegmental area; Vstr.; ventral striatum. Ψ, neural adaptation.