title: Are there circadian rhythms in learning by Octopus?
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D004193:Discrimination Learning; D005556:Form Perception; D009043:Motor Activity; D049831:Octopodiformes / Q000502:physiology*; D009949:Orientation; D011678:Punishment; D012201:Reward; D014110:Touch; D014796:Visual Perception