Schematic of experiment 1. (A) The transitional probability (TP) of targets (i.e., high [75%], medium [50%], and low [25%]) was decided by the conditional probability of each target following a cue. In terms of individual targets, the predictiveness of cues (i.e., high [75%], medium [50%], and low [25%]) was determined by the levels of probability in which the cue predicted that target. (B) An example trial with a low-TP target and a probe examining the representation of a high-predictive cue. (3AFC) Three-alternative forced choices. (C) The distribution of trial numbers in different preceding target TP ([red shading] high, [blue shading] medium, [green shading] low) and cue predictiveness ([red border] high, [blue border] medium, [green border] low) conditions for each block. (D) Mean accuracy rates (bar chart) and mean reaction times (line chart) for detecting high-TP, medium-TP, and low-TP targets in the target detection task. Error bars indicate standard errors. (E) Mean accuracy rates (bar chart) and mean reaction times (line chart) for identifying high-predictive cue, medium-predictive cue, and low-predictive cue probes after high-TP, medium-TP, and low-TP targets in the probe identification task. Error bars indicate standard errors.
