PSYC 100 Lecture Notes - Lecture 10: Ganglion Cell, Color Vision, Radiant Energy

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jordan Poppenk

Document Summary

Objectives: describe the visual system from eye to cortex, describe how sensory information is translated by our visual system in psychological characteristics. What is light: adequate stimulus: type of physical energy to which a sensory receptor is especially tuned, the electromagnetic radiation to which we are sensitive is a very small part of the electromagnetic. Light is a form of electromagnetic energy (as are x-rays, ultraviolet, infra-red radiation) spectrum. Wavelength: distance from crest of one wave to crest of next. Amplitude: amplitude is the height of each wave. Intensity depends directly on amplitude: amplitude is the height from a crest (top) to a trough (bottom) of the light wave, higher amplitude waves are perceived as brighter. Intensity corresponds to the psychological property of brightness. What do photoreceptors detect: dark adaptation: when we move from bright to dark conditions, our eyes adjust gradually to become more sensitive.