Guppies (Poecilia reticulata) are deceived by visual illusions during obstacle negotiation.

ABSTRACT: Animals travelling in their natural environment repeatedly encounter obstacles that they can either detour or go through. Gap negotiation requires an accurate estimation of the opening's size to avoid getting stuck or being injured. Research on visual illusions has revealed that in some circumstances, transformation rules used to generate a three-dimensional representation from bidimensional retinal images fail, leading to systematic errors in perception. In Ebbinghaus and Delboeuf illusions, the presence of task-irrelevant elements causes us to misjudge an object's size. Susceptibility to these illusions was observed in other animals, although with large intraspecific differences. In this study, we investigated whether fish can accurately estimate gap size and whether during this process

SUBMITTER: Santaca M 

PROVIDER: S-EPMC8864340 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature