Final answer:
Small interocular luminance differences of less than one log unit do not result in perceptible changes, hence the correct answer is A) No perceptual change.
Step-by-step explanation:
The student's question focuses on the effects of small interocular luminance differences on perception. In the context of color vision and color constancy, the human visual system can compensate for various lighting conditions to preserve the perception of an object's true color. The ability to perceive an object as consistently colored under different lighting scenarios is critical for visual recognition and navigation. When considering this, the correct answer to the question is:
A) No perceptual change
Small differences in luminance, such as less than one log unit (<1 log unit), are generally not perceptible to the average viewer and thus would not typically lead to visual discomfort, a color shift, or increased brightness perception.