Responses of Simple Cells in V1
Simulate an experiment to find the location and structure of the receptive field of a simple cell in V1.
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This area of the retina contains the receptive fields of Simple Cells A and B in the primary visual cortex (area V1). Each simple cell has a preferred orientation:
it responds most strongly to a stimulus that covers the entire excitatory center of its receptive field without covering any of the inhibitory surround.
Drag different stimuli across the retina and watch the cells' responses. Can you determine the preferred orientation of each cell and the location of its
receptive field? Click SHOW RECEPTIVE FIELD to check your conclusions.
What Determines the Responses of Simple Cells in V1?
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Which statement correctly describes how simple cells in V1 respond to stimuli?
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Suppose a simple cell in V1 with a preferred orientation of 65° responds above baseline to a bar of light oriented at 90° at a particular location on the retina. What will tend to happen if a bar with an orientation of 75° stimulates the same location?
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The graph shows the orientation tuning curves of four simple cells in V1. Which do you think will tend to respond most strongly to a bar of light oriented at 45° and centered on its receptive field? Which cell will tend to respond least?
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We recognize objects largely by their shape, and the shape of an object is defined by the position and orientation of its edges. All of the following statements are true—which indicates that simple cells in V1 are involved in object identification?