title: Integration process of contours defined by different attributes.
abstract: We examined how contours defined by different attributes are integrated into a shape using the visual search paradigm and found that the search for the bar orientation is particularly difficult when each bar is composed of motion-defined and luminance- or color-defined contours. This does not support the view that the shape integration process is based on the unified contour representation entirely common to all attributes, but suggests that motion-defined contours are integrated through a different process.
authors.affiliation: Visual Cognition Group, Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 6, Tsukuba, Ibaraki 305-8566, Japan.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Morita
authors.forename: Masahiko
authors.initials: M
authors.lastname: Morita
authors.forename: Takatsune
authors.initials: T
authors.lastname: Kumada
mesh_terms: D003118:Color Perception / Q000502:physiology; D015350:Contrast Sensitivity; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D009039:Motion Perception / Q000502:physiology; D010364:Pattern Recognition, Visual; D014796:Visual Perception / Q000502:physiology*