Psych Notes 2-5 - Psych Notes 2-5 Sensation and Perception...

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Psych Notes 2-5 Sensation and Perception Sensation is the conversion of energy from the environment into a pattern of response by the nervous system Perception is the interpretation of that information The Detection of Light Visible light is one small part of the electromagnetic spectrum The human eye is designed to detect energy in the wavelengths from 400 to 700 nm. The light goes through the cornea , then some liquid, then the pupil (on either side is the iris ) then the lens , all the way to the retina where the image in inverted. There is a slight depression called the fovea . Then activates the rods and cones , which are the receptors. The lens changes shape so that objects (a) far and (b) near can come into focus The Visual Receptors The retina contains two types of specialized neurons: Cones (which come into contact with bipolar cells) Best for bright light and detail Rods (which come into contact with bipolar cells) Best for dim light
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Psych Notes 2-5 - Psych Notes 2-5 Sensation and Perception...

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