But can brain activity be mapped anywhere like this with fmri? I doubt it. But yes — it is cool that the brain keeps spatial proportions of reality in the brain map! Very unlike latent space.
Fig4 shows the letter M on the cortical surface, where the stimulus accounted for the effects of foveal magnification (foveal vision gets more cortical space). Keep in mind that we now, in theory, have stronger magnets, better head coils (the part that picks up the image information), and better sequences (the software that manipulates the magnets to produce the images) so we could do even better than that these days.
