Amodal completion by baboons (Papio papio): contribution of background depth cues.
Four baboons (Papio papio) were tested in a computerized two-alternative forced choice task in which partially occluded graphic stimuli were shown either on linear perspective backgrounds depicting a corridor or on uniformly black backgrounds. The results indicated that baboons complete partly occluded stimuli and that amodal completion is facilitated by the display of pictorial background depth cues. Inter-individual differences emerged in the ability to extrapolate three-dimensional information from two-dimensional visual information.
CNRS-INCM, 31 ch. Joseph Aiguier, 13402 Marseille Cedex 20, France. fagot@icm.cnrs-mrs.fr
Joël
J
Fagot
Isabelle
I
Barbet
Carole
C
Parron
Christine
C
Deruelle
D000818:Animals; D003463:Cues; D003867:Depth Perception / Q000502:physiology*; D005260:Female; D008297:Male; D048531:Papio papio / Q000502:physiology*; D010775:Photic Stimulation