Interesting, that I wouldn't be surprised if that is what the Eye of Horus was symbolizing. Because, of course the Egyptians knew about the brain. if you look at the medical papyrus, they had an EXTENSIVE knowledge of anatomy and physiology.
All frustrations are self-induced. The outside world can invite us to become upset, but we ultimately accept the invitation. - Don't let others add to our frustrations. Choose to be proactive not reactive.