Textbook Notes (363,140)
Canada (158,217)
Psychology (3,263)
PSYC 2390 (118)
Lana Trick (87)
Chapter 3

Chapter 3 Notes

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University of Guelph
PSYC 2390
Lana Trick

Chapter 3 Introduction to vision Focusing Light onto the Retina Light The stimulus for Vision y Vision is based on visible light band of energy within the electromagnetic spectrum y Electromagnetic spectrum continuum of electromagnetic energy that is produced by electric charges and is radiated as waves y Wavelength distance between the peaks of the electromagnetic waves y Wavelengths range from extremely shortwavelength gamma rays to long wavelength radio wavesy Visible light energy within the electromagnetic spectrum that humans can perceivey With humans and some animals the wavelength visible light is associated with different colours y Light can also be described as consisting of small packets of energy photons The Eye y Eye where vision begins y Light enters through pupil and is focused by the cornea and lens to form sharp images of objects on the retina y Two kinds of visual receptors 1 Rods 2 Cones o Contain light
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