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the eye - Coggle Diagram
the eye
receptive field
a specific region in sensory space in which appropriate stimulus leads to a response in a sensory neuron
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structure
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when light activates center more than periphery = higher action potential (excretory)
when light enters periphery more = lower action potential (photoreceptors inhibit ganglion)**
when light is equal across center and periphery (intensity of light) = baseline action potential (they cancel each other out)
optics
eye maps pattern of reflected light onto retina in the form of an image - light coming from one point in space is mapped onto one point on the retina
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photoreceptors
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cone system
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photopic vision
S, M, L, cones with peak sensitiviities at different wave lengths (colour vision) / most sensitive to yellow light
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