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Bio365-38-043010 - Representation of visual field Receptive...

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Representation of visual field
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Receptive fields in V1
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David Hubel Torsten Wiesel
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Simple cells – elongated bar Receptive fields are elongated (not circular) and are divided into excitatory (+) and inhibitory (-) regions. They are orientation selective . New emerging property, generated in visual cortex They are position selective . If the elongated bar is in the right position you get an excitatory response If the bar is in the wrong position you do not get a response.
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Complex cells Receptive fields are elongated (not circular). They are orientation selective . They are not position selective .
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Neuron fires strongly Neuron fires weakly No response
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Hyper-complex cells Receptive fields are elongated (not circular). They are orientation selective . They are not position selective . They are length selective
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Neuron fires strongly Neuron fires weakly No response
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Direction selective cells
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Direction selective cells Receptive fields are elongated (not circular).
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