Picture-object recognition in a comparative approach: performance of humans (Homo sapiens) and pigeons (Columba livia) in a rotational invariance and a complementary information task

摘要: Pigeons and humans are two highly visual species that have evolved separately for about 310 million years (Kumar Hedges, 1998) developed largely convergent systems due to similar needs. To investigatepigeon vision cognitive abilities twodimensional pictorial stimuli often used. However, it is not entirely clear, how pigeons perceive such whether or they can associate photographs with real objects. In the present study nine eleven were trained discriminate between of biologically irrelevant objects (“Greebles”). The housed in an aviary containing Greebles wooden chambers where they had peck on a Plexiglas disk when positive presented, thus obtaining food. Humans same presented computer screen click mouse stimuli. Results showed much faster at learning Greebles. In first test, discriminate new rotational views performed equally well interpolated test (i.e. lay between training views) extrapolated (i.e. outside range), while better interpolated than extrapolated views. Therefore, be concluded object recognition was viewpointindependent viewpoint-dependent pigeons. second following procedure by Aust Huber (2006), parts were included see formed associations 2D images 3D their aviary. They did these parts correctly. repeated three already used test but different sizes. Discrimination seemed depend visibility appendages might been based features pictures themselves without 71 recognition what portrayed. results this compared previous study which either Greebles, holograms, computer them. There, too, installed pigeons’ aviary; however, tested computerimages lived adjacent thus only limited contact We wanted find out more extensive any influence performance. However, there no difference performance groups. This evidence that result — holograms than fact latter stimulus type access thereal