Night Vision (IMAGE) Max-Planck-Gesellschaft Caption In nocturnal to low light active mammals (e.g. the cat) the rod photoreceptors of the eye have nuclei with an inverted architecture, whereas the rods of diurnal mammals (e. g. the crab-eating macaque) have a conventional nuclear architecture. The inverted architecture improves nocturnal vision. Credit Image: Leo Peichl, Max Planck Institute for Brain Research Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.