Refer to the figure. 
The figure shows how on-center and off-center ganglion cells of the retina encode patterns of contrast between light and dark.What type of light stimulus pattern on the retina does Row D represent?
Definitions:
Cardiac Output
The volume of blood pumped by the heart per minute, an important measure of heart function and efficiency.
Stroke Volume
The amount of blood pumped by the left ventricle of the heart in one contraction.
Peripheral Resistance
The resistance to the flow of blood in the peripheral arterial vessels, which largely determines blood pressure levels.
Vasoconstriction
The narrowing of blood vessels, decreasing blood flow.
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