The question is not only a technical one but also a philosophical one: What is human consciousness?
Is an infant conscious? Yes. Is an ape conscious? I think so. Is a dandelion conscious? Most will say, no. Yet when spring comes and I mow my lawn, the dandelions remember exactly the height of the blades and the next flowers grown right under that height!
Is it consciousness? Intelligence? And if not; where in evolution consciousness appeared? Progressively? And from what?
You can prove a believer in Intelligent Design that yes, evolution can make a human eye to "pop up from the skin." Photosensitive cells are found on many primitive forms of live in the sea. Subsequent stages of deepening of those cells, closing it in a globe of water and the forming of a transparent lens are still here to prove that, by simple natural selection, an eye can be formed.
But the brain and consciousness is a different matter. Is a chimp aware of his existence? Is a modern computer aware of its existence? How could we know?
Of course, we could use a computer to simulate the human brain. Of course we could ask then that computer if it is conscious but … how would we know? Perhaps we programmed that computer to be friendly and answering, yes, is being friendly, isn't it?
I once read an article titled: We remember the future. Of course, we don't but evolution gave us memory only to be better prepared for the future. If we meet a lion, it doesn't matter if we remember the colour of its eyes. It only matters that we remember that next time, we have to run and fast!
So, unlikely computers that can each time get from memory say, an image, exactly the same, our memory is not very good at remembering and that's why we make poor witnesses as it has been proved in several law suits.
In fact, unlike computers, each time we remember, we have to do the same connections between our neurones as we did the first time. It never happens twice the same way and that's why two different people observing the same event, will remember it differently.