PS262 Study Guide - Midterm Guide: Limulus, Rhyne, Sorne
Document Summary
Chapter 1 introduction to perception: perception depends on the properties of the sensory receptors. The perceptual process: environmental stimulus, light is reflected and transformed, receptor processes, neural processing, perception, recognition, action. The tree is transformed into the image on the retina, and this image represents the tree in the person"s eyes. Transformations between receptors and brain/within the brain = patterns of electrical signals in the brain is changed compared to the electrical signals that left the receptors; changes crucial for next step. Top-down processing (aka knowledge-based processing): processing based on knowledge, isn"t always involved in perception, as stimuli becomes more complex more role of top-down. Exponent n less than 1. 0 = response compression; greater than 1. 0 = response expansion. Compression and expansion illustrate how the operation of each sense is adapted to how. Light can also be described as consisting of small packets of energy called photons.
