PSYB57H3 Chapter 3: Chapter 3.doc
Document Summary
Figure/ground organization: the determination of what is the figure and what is the ground. The brain areas analyzing a pattern"s basic features do their work at the same time as the brain areas analyzing the pattern"s large-scale configuration. Features have priority in our perception of the world (differences in features are easy to recognize. Over-regularization errors: people perceive the input as being more regular than it actually is. Feature nets: there is a network of detectors, organized in layers with each subsequent layer concerned with more complex, larger scale objects. Feature detector: bigram detector: detectors of letter pairs (hice=hi, ce-recognizable combinations, these detectors will fire with weak input. The mcclelland and rumelhart model: excitatory connections: activation of one detector serves to activate other detectors (arrows) Inhibitory connections: detectors can also inhibit each other (dots) Ease of recognition will be faster from some viewpoints than from others, and so recognition will be viewpoint- dependent.
