PSYCH 120A Chapter Notes - Chapter 4.3: Object Model, Inferior Temporal Gyrus
Document Summary
More efficient at identifying characters in context than in isolation. Excitatory connections: allow one detector to activate its neighbors. Inhibitory connections: detection of one inhibits detection of another. Higher level detectors can influence lower level detects. Detectors can also influence other detectors at the same level. Trip will inhibit firing of trap or take but also excite detectors for component letters t, r, i, and p. Trip detector primes the t detector so that it is more likely to fire even with a weak input. Two way communication is found throughout the nervous system. Recognition by components (rbc) model: includes intermediate level detectors sensitive to geons. Geons act as basic building blocks for all objects we recognize. Biederman: need at most 3 dozen different geons to describe every object in the world. Geons combined in different ways to create objects. Lowest level detectors (feature detectors): responds to edges, curves, vertices, etc.
