PSYC 4600 Lecture Notes - Lecture 10: Simultaneous Exhibition, Physical Data Model, Visual Perception

• School: University of Guelph
• Department: Psychology
• Course: PSYC 4600
• Professor: Maria Giammarco

Document Summary

Voluntary: how internal goals guide competition for perceptual representation. Involuntary: driven by the physical properties of the stimuli. Caused by a single stimulus being unique to the environment. Visual system does this because in evolution it may be important to survival to pick out differences in the environment: ex. red berries in green background. Visual perception is competitive: multiple stimuli in complex visual environments compete for representation, driven by physical architecture of visual system. Receptive fields and increasing size causes convergence on receptive fields. What if there"s no winner to competition: mutual suppression. No one stimuli will capture attention: but salient (unique) stimuli will capture attention automatically and win the competition. Salient objects are based on low level features. And will suppression be eliminated when one stimulus pops out: results, solid line sequential, dotted line- simultaneous. Heterogeneous display: sequential has no competition, regular processing, simultaneous has competition, and each is equal in saliency, nothing salient.