Tootfinder

A nice shift in perceived colour between central and peripheral vision. The fixated disc looks purple while the others look blue.
The effect presumably comes from the absence of S-cones in the fovea.
https://bsky.app/profile/mamassian.bsky.social/post/3lzl7geiqm22n

Pascal Mamassian (@mamassian.bsky.social)
A nice shift in perceived colour between central and peripheral vision. The fixated disc looks purple while the others look blue. The effect presumably comes from the absence of S-cones in the fovea. From Hinnerk Schulz-Hildebrandt: https://arxiv.org/pdf/2509.11582v2