That's a good point. I think we need to have a better understanding about how the brain works before we can properly answer that question. At this point there's a lot we don't understand about the brain, and psychology for that matter, it's basically a black box that we can observe through a microscope or other imaging system but we don't really understand what's happening.

An ant only has around 250,000 neurons, yet they're still more intelligent than the most advanced "AI" we've managed to produce.

An ant may not be able to paint a painting or write a novel, but I think most people agree they qualify as an intelligent being.