Extended Data Fig. 2: Behavior-only group’s performance, separated into three levels of PE. | Nature Neuroscience

Extended Data Fig. 2: Behavior-only group’s performance, separated into three levels of PE.

From: Prediction errors bidirectionally bias time perception

Extended Data Fig. 2

Data is presented for participants in the behavior-only group, when separating trials into three levels of PE. a. Proportion of discrimination errors as a function of objective time difference between the two images (Δt), averaged across all trials separately for each PE-type. No difference between PE-types (F2,34 = 1.5, p = 0.24). b. Proportion of discrimination errors as a function of PE-type and Trial-type. An interaction between PE-type and Trial-type (F2,34 = 10.89, p = 0.0002, η2 = 0.39). SL trials: mean PE+ = 0.3, mean PE- = 0.49, mean PE0 = 0.37. Better performance in PE+ vs. PE- (p=0.008, Cohen’s d = 0.81), worse performance in PE- compared to PE0 (p = 0.05, Cohen’s d = 0.6). LS trials: mean PE+ = 0.39, mean PE- = 0.21, mean PE0 = 0.275. Worse performance during PE+ vs. PE- (p = 0.005, Cohen’s d = 0.86) and PE0 (p = 0.02, Cohen’s d = 0.68). There was no significant difference between PE- and PE0 trials (p = 0.11). Inset: Performance after correcting for individual Time-Order Error (TOE). c. Proportion of discrimination errors as a function of the time difference between images (Δt), separately for LS and SL trials. PE+ and PE- bias performance in opposite directions relative to PE0 for all values of Δt. No main effect of Trial-type (F1,17 = 4.03, p = 0.06). d. Proportion of discrimination errors as a function of the time difference between images (Δt), separately for LS and SL trials and corrected for TOE. PE+ and PE- bias performance in opposite directions relative to PE0 for all values of Δt. e. Proportion of discrimination errors as a function of the individual Just-Noticeable-Difference (JND), corrected for TOE, fitted to a logistic function after JND normalization. f. Model fit to individual behavioral data, averaged over subjects. Error bars and error bands represent SEM (n=18).

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