Detection of change in shape and its relation to part structure.
Using a change detection paradigm (Barenholtz, E., Cohen, E. H., Feldman, J., & Singh, M. (2003). Detection of change in shape: An advantage for concavities. Cognition, 89(1) 1-9), we measured sensitivity to the changes of shapes and in particular the difference between detecting a new convex or concave vertex. We conclude that concave vertices per se are not more salient, but changes in the sequence of convexities and concavities along a contour are salient. We argue that these changes are likely to signal a change in perceived part structure.
Bertamini
Marco
M
Department of Psychology, University of Liverpool, Eleanor Rathbone Building, Bedford Street South, Liverpool L69 7ZA, UK. m.bertamini@liverpool.ac.uk
Farrant
Tracy
T
D005556:Form Perception; D006801:Humans; D010364:Pattern Recognition, Visual; D017603:Signal Detection, Psychological