01:830:301 Lecture Notes - Lecture 17: Visual Cortex, Kurt Koffka, Receptive Field
Document Summary
Perceptual organization - refers to the organization of an image into distinct objects and groups within the system. Contrast borders - edges, shifts in contrast, different objects look different in the world - general strategy in identifying object and structure boundaries. Different objects tend to differ in color. Cells in the primary visual cortex (v1) respond to local information - local being in the receptive field. Texture contrast - same average intensity but different textures. Similar things group together, different things get segmented. The whole is greater than the sum of its parts . The whole is different than the sum of its parts . The whole is the way in which we perceive the image as a whole. Apparent motion - an object that is flashing appears to be in motion. Grouping of similarity - similar items tend to group together. Grouping by proximity - nearby items tend to group together.
