Figure 4. Representational similarity analysis (RSA) captures the format of state representations.

(A) Conceptual depiction of RSA methods with whole brain searchlight. Multivoxel patterns were extracted for all trials and reorganized into a correlation distance (1 r) matrix with trials nested within stimulus identities for each task. State representation was evaluated separately for choice and feedback. (B) Regression approach estimating state representation in neural ROIs, controlling for expected value (V) and trial autocorrelation.