Columbia subject headings:
Harvard subject headings:
Art appreciation
Arts--Philosophy
Image (Philosophy)
Optical illusions in art.
Optical illusions--Philosophy.
Phenomenology.
Pointing (Gesture)
Pointing (Gesture)--Philosophy.
Presentation (Philosophy)
Visual perception
Princeton subject headings:
Art appreciation.
Arts--Philosophy.
Image (Philosophy)
Optical illusions in art.
Optical illusions--Philosophy.
Phenomenology.
Pointing (Gesture)--Philosophy.
Presentation (Philosophy)
Visual perception.