Slide 34 of 37
Notes:
Depauperate is a biological term meaning “poorly or imperfectly developed.”
The dog picture has one stable attractor, that of a dalmation near a tree, surrounded by a large, relatively flat area of instability. The Necker cube has two quasi-stable attractors separated by a sharp saddle, so any perturbation is likely to push the percept of the cube into its other quasi-stable configuration.
Perception of Necker cube switches about once every 3 seconds (Kelso, 1995) when the cube is presented at 40o orientation.