Jan Koenderink, “Vision as a User Interface” in Proceedings SPIE 7865, Human Vision and Electronic Imaging XVI, 786504 (February 4, 2011)—
Visual awareness is proto-mind stuff. Here I am thinking of the Gestalts or the classical illusions, which are cognitively inpenetrable. Even if you are an expert on a certain illusion, you still see it, cognition doesn’t make it go away. Likewise, a Gestalt like the famous Kanizsa triangle [as shown above] is stubbornly there—in your visual awareness, even though you know that “there is no triangle.” Visual awareness is presentation in the sense that it simply happens to you. Nothing you can do about it, nor are you responsible for the presentations you have. It is much like sneezing in this respect.
Also see Art, Gestalt, and Camouflage (28 min. video talk)