Fig. 3.

Voxel-wise map of the population spatial frequency tuning (pSFT) peak across the visual field. Each point represents a single voxel. The color codes the magnitude of the estimated pSFT peak of the voxel, and the size of the points are scaled with their R² of the pSFT fits. The locations of the points are selected according to the population receptive fields polar angle and eccentricity coordinates of the corresponding voxels. The symbols correspond to different subjects. In all 3 regions, the foveal voxels prefer the highest spatial frequencies and this value drops when moving toward the more peripheral regions. Moreover, the frequencies represented in V1 seem to be higher in comparison to the higher cortical regions.