Final answer:
Blindsight is the best illustration for the phenomenon where stroke victims can identify the orientation of sticks without consciously seeing them due to damage in the primary visual cortex.
Step-by-step explanation:
The phenomenon where certain stroke victims report seeing nothing when shown a series of sticks, yet are able to correctly report whether the sticks are vertical or horizontal, best illustrates blindsight. Blindsight is a condition where a person can respond to visual stimuli without consciously experiencing any sight.
This condition occurs due to damage to the primary visual cortex, which prevents conscious perception of vision, though other pathways involving the brain’s secondary vision areas remain intact, allowing for some visual processing to occur.