Pigeons spontaneously form three-dimensional shape categories.

ABSTRACT: We explored the pigeon's representation of the shape of simple three-dimensional objects (geons) rotated in depth (four views each of four geons). Pigeons assigned to the Categorization group had to respond differentially to images of four different geons-termed arch, barrel, brick, and wedge-based on their 3D shape, regardless of the orientation of the object. Pigeons assigned to the Pseudocategorization group had to respond differentially to the same objects based on groupings that did not correspond to object identity, which required the learning of local orientation-dependent features (e.g., a concave curve on top, or the position of an illumination hotspot). The Categorization group, which could employ object-identity representations, quickly achieved highly accurate responding. The P

SUBMITTER: Peissig JJ 

PROVIDER: S-EPMC10631373 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature