Psych Notes feb 21

Psych Notes feb 21 - Psych Notes 2/21/07 Perception...

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Psych Notes 2/21/07 Perception Continued The fovia is an area in the retina that is entirely made up of cones. In the center of the eye. The outer part of the retina is all rods. - In the dark, looking directly at something will not allow you to see it, because the cones in the center of the retina cannot function in low light - To find something in the dark, you must not look directly at it. Looking in the general direction, the peripheral, will allow you to see it more clearly in the dark. - There are about 1 million optic neurons. There are 127 million light receptors (rods/cones) o The information from these light receptors must be combined into 1 million signals. There are only 1 million neurons, 1 million opportunities for information transfer. o Receptive field – a collection of receptors that is sensitive to some group/set of rods and cones. o Center Surround Mechanism – rods and cones arranged like a bulls eye. A center area and a surround area. The receptive field stimulates the neuron
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Psych Notes feb 21 - Psych Notes 2/21/07 Perception...

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