. Schema, A simplified representation that abstracts from some of the properties of what it represents

. Topological-equivalence, The relation holding between two regions that share a common topological structure (intuitively: regions whose shapes can be transformed into each other by elastic deformation)

. Unit, A portion of the perceptual field that is bestowed some representational advantage. Basic units are connected, uniform and maximal regions

I. Biederman and E. Cooper, Evidence for Complete Translational and Reflectional Invariance in Visual Object Priming, Perception, vol.26, issue.5, pp.585-593, 1990.
DOI : 10.1068/p200585

I. Biederman and E. Cooper, Size invariance in visual object priming., Journal of Experimental Psychology: Human Perception and Performance, vol.18, issue.1, pp.121-133, 1992.
DOI : 10.1037/0096-1523.18.1.121

R. Casati and A. Varzi, Parts and Places, 1999.

L. Chen, Topological structure in visual perception, Science, vol.218, issue.4573, pp.699-700, 1982.
DOI : 10.1126/science.7134969

L. Chen, Holes and wholes: A reply to Rubin and Kanwisher. Perception and Psychophysics, pp.47-53, 1990.

P. Halligan and J. Marshall, When Two is One: A Case Study of Spatial Parsing in Visual Neglect, Perception, vol.350, issue.3, pp.301-312, 1993.
DOI : 10.1068/p220309

A. Herskovits, Language, Spatial Cognition, and Vision, pp.155-202, 1997.
DOI : 10.1007/978-0-585-28322-7_6

D. Hoffman and W. Richards, Parts of recognition, Cognition, vol.18, issue.1-3, pp.65-96, 1984.
DOI : 10.1016/0010-0277(84)90022-2

S. Palmer and I. Rock, Rethinking perceptual organization: The role of uniform connectedness, Psychonomic Bulletin & Review, vol.9, issue.1, pp.29-55, 1994.
DOI : 10.3758/BF03200760

J. Piaget and B. Inhelder, The child's conception of space, 1967.

J. Rubin and N. Kanwisher, Topological perception: Holes in an experiment, Perception & Psychophysics, vol.11, issue.2, pp.179-180, 1985.
DOI : 10.3758/BF03202856

E. Spelke, Principles of Object Perception, Cognitive Science, vol.13, issue.1, pp.29-56, 1990.
DOI : 10.1207/s15516709cog1401_3

L. Talmy, Toward a cognitive semantics, 2000.

S. Ullman, High-Level Vision, 1996.

D. Hilbert and S. Cohn-vossen, 1952 trad.) Geometry and the Imagination [A classical study of spatial imagination in mathematics, 1932.

B. J. Scholl, Objects and attention: the state of the art, The state of the art on various types of object advantages, pp.1-46, 2001.
DOI : 10.1016/S0010-0277(00)00152-9