Lookup NU author(s): Dr Quoc Vuong
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We investigated the role of dynamic information in human and pigeon object recognition. Both species were trained to discriminate between two objects that each had a characteristic motion, so that either cue could be used to perform the task successfully. The objects were either easy or difficult to decompose into parts. At test, the learned objects could appear in either their learned motions, the reverse of the learned motions, an entirely new motion, or a new object could appear in one of the learned motions. For humans, any change in the learned motion produced a decrement in performance for both the decomposable and the nondecomposable objects, but participants did not respond differentially to new objects that appeared in the learned motions. Pigeons showed the same pattern of responding as humans for the decomposable objects, except that pigeons responded differentially to new object in the learned motions. For the non-decomposable objects, pigeons used motion cues exclusively. We suggest that for some types of objects, dynamic information may be weighted differently by pigeons and humans.
Author(s): Spetch ML, Friedman A, Vuong QC
Publication type: Article
Publication status: Published
Journal: Learning and Behavior
Print publication date: 01/01/2006
ISSN (print): 1543-4494
ISSN (electronic): 1543-4508