Exm 1 SA - 52018 - Compatibility Mode - Saved to this PC Sign in Insert Draw Des

Question

Exm 1 SA - 52018 - Compatibility Mode - Saved to this PC Sign in Insert Draw Design Layout References Mailings Review ViewHelp Nitro Pro Tell me what you want to do File Home Share OFind Replace Select Editing Times New Roman Paste Emphasis Heading 1 Normal Strong Subtitle lipboard Forit Paragraph Styles , 2. Describe the aperture problem. How does our visual system solve this problem so that we can accurately assess motion? (6 pts) Page 1 of 2 228 words + 130% 12:26 PM Type here to search 2/9/2018

Explanation / Answer

The early neurons in the visual system have very small apertures through which they see an object.The small field of observation makes it impossible for the neuron to detect the direction of motion of the object.The apertures combined with the geometry of objects create local motion signals that are too ambiguous to interpret.So if a square is moving upwards to the right, a neurons visual field can only detect the rightwards motion.This is called the aperture problem.

Our visual system uses the Intersection of constraints model to solve this problem. In area MT of the visual field, there are integrative neurons which receive inputs from the receptive neurons in area VL of the visual field. The visual system integrates the different local responses from various VL neurons which are processed by the MT neurons to remove the ambiguity and bind the motion signal information into coherent perceptual wholes. The lines of an object aligned in different directions are overlapped, the point where the edges or constraints of the line intersect is called the intersection of constraints, it is this point which gives away the only possible motion direction of the object.

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