D. Purves et Tj. Andrews, THE PERCEPTION OF TRANSPARENT 3-DIMENSIONAL OBJECTS, Proceedings of the National Academy of Sciences of the United Statesof America, 94(12), 1997, pp. 6517-6522
When the proximal and distal elements of wire-frame cubes are conflate
d, observers perceive illusory structures that no longer behave veridi
cally. These phenomena suggest that what we normally see depends on vi
sual associations generated by experience. The necessity of such learn
ing may explain why the mammalian visual system is subject to a prolon
ged period of plasticity in early life, when novel circuits are made i
n enormous numbers.