Figure 1.

Stimuli and fMRI experimental design for (A) the orientation experiment and (B) the pRF mapping sessions. C, Predicted pattern of data if edge-related activity substantially contributes to orientation decoding. Ci, When all voxels are available for classification, voxels with pRFs located at the stimulus edges should contribute more to orientation decoding than voxels with pRFs corresponding to the middle of the stimulus. Cii, When voxels are binned by pRF eccentricity before classification, higher classification performance is expected for bins with voxel eccentricities centered near the stimulus edges (at 3.5° and 9.5°).