Figure 1.

Example of the visual stimuli used for retinotopic mapping. (A–D) A sample of the contrast-reversing ring stimuli used for phase-encoded eccentricity mapping that illustrate a few sample steps of a single stimulus cycle. Note that in (D), the stimulus starts again in the center of the visual field, while the previous cycle is still in its final stage, commonly referred to as “wraparound.” (E, F) The stimuli used for pRF mapping. (E) General stimulus features. In all panels, the fixation cross is overlaid and includes a central gap. In (F), the fixation cross has the target size for the attention task (doubled width).