title: Shape predominant effect in pattern recognition of geometric figures of rhesus monkey.
abstract: Three monkeys were trained successively with discrimination, concurrent matching to sample, and sameness-difference judgment tasks in which learning curves were compared. Then, the display duration for the stimuli was shortened to 100, 50, and 30 ms respectively to test the changes in accuracy and reaction time. All results in three experimental paradigms suggested consistently that the geometric shape (triangle, circle, and square) plays a more predominant role than topological features (the hole inside of a figure and the hole numbers) in monkey figure recognition. The results are different from the experiment by human subjects who presented hole predominant in figure recognition. Therefore, the precedence in perception depends on subject species, stimulus set, and ecological significance of the perceiving process.
authors.affiliation: Department of Psychology and National Laboratory on Machine Percept., Peking University, Beijing 100871, China.
authors.forename: Yucui
authors.initials: Y
authors.lastname: Chen
authors.forename: Weiwei
authors.initials: W
authors.lastname: Zhang
authors.forename: Zheng
authors.initials: Z
authors.lastname: Shen
mesh_terms: D000818:Animals; D004193:Discrimination Learning; D005260:Female; D005556:Form Perception; D006801:Humans; D008253:Macaca mulatta / Q000523:psychology*; D010364:Pattern Recognition, Visual; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time; D021641:Recognition, Psychology; D013045:Species Specificity