[Campbell Biology P.1169] Based on the text's description of lateral inhibition, which of the... | Practice Question
Based on the text's description of lateral inhibition, which of the following scenarios best illustrates its function in visual processing?
A: A white object on a black background appears to have a sharper, more defined edge due to the enhanced contrast between the illuminated and surrounding dark areas.
B: The pupil dilates in dim light to allow more light to enter the eye, improving overall brightness perception.
C: Color perception shifts from cones to rods in low light conditions, leading to monochromatic vision.
D: A person experiences temporary blindness when moving from bright sunshine into a dark movie theater.
Explanation
The text explains that lateral inhibition 'sharpens edges and enhances contrast in the image' by making the region receiving light appear lighter and the dark surroundings even darker. This effect is precisely what makes a sharp boundary between a white object and a black background more defined.