SensationPerception

SensationPerception - Sensation and Perception Sensation...

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Sensation and Perception
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Sensation: the conversion of energy from the environment into a pattern of response by the nervous system. Perception: the interpretation of sensory information. Sensing the World Around Us Stimuli: energies in the environment that affect what we do . Receptors: the specialized cells in our bodies that convert environmental energies into signals for the nervous system .
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The Detection of Light Light: the stimulus that the visual system is designed to detect . Visible light: just one very small portion of the electromagnetic spectrum, which is the continuum of all the frequencies of radiated energy .
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The Structure of the Eye
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Common Disorders of Vision Myopia (nearsightedness): the person can focus well on nearby objects, but not distant ones. Hyperopia (farsightedness): the person can focus well on distant objects, but not on nearby ones . Glaucoma: increased pressure within the eyeball, causing damage to the optic nerve and loss of peripheral vision. Cataract: the lens of the eye becomes cloudy .
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The Visual Receptors Cones: are utilized in color vision, daytime vision, and detail vision and are most plentiful around the center of the retina . Rods: are adapted for vision in dim light and are most plentiful in the periphery of the retina . Fovea: the center of the human retina, and the location of the highest proportion of cones .
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the gradual improvement in the ability to see in dim light. Cones
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This note was uploaded on 06/24/2011 for the course COMP 100 taught by Professor Dfgdegg during the Spring '08 term at DeVry Chicago O'Hare.

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SensationPerception - Sensation and Perception Sensation...

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