Final answer:
The experiment regarding the visual illusion of motion indicates how the brain perceives depth and spatial movement through the comparison of visual inputs from both eyes.
Step-by-step explanation:
In a classic experiment demonstrating visual illusion of motion, it suggests that when people see a light flashed in different orientations, they perceive motion. This is explained by the brain's capacity to interpret spatial information by comparing the input from both eyes. For instance, if a visual stimulus moves leftward in one eye and rightward in the opposite eye, the brain interprets this as movement along the midline, towards or away from the face. If both eyes see an object moving in the same direction but at different rates, the brain perceives this as motion in space with a depth component, indicating the object is moving closer or further away, depending on the consistency and rate of the movement observed by each eye.