Figure 4.

Relationship between perceptual and neural bias. A, Correlation between neural bias (x-axis) and perceptual bias (y-axis), across subjects. Each dot represents one subject. B, Subjects were split into two groups on the basis of their perceptual bias toward the cued directions, yielding a group with a strong (dark bars) and one with a weak (light bars) perceptual bias (leftmost bars). The group with the strong perceptual bias also had a strong neural bias, while the group with the weak perceptual bias did not have a significant neural bias (rightmost bars). Error bars indicate SEM (***p < 0.001).