The "Cognitive Map" (Tolman, 1948) is a key notion in spatial processing studies. It refers to high level spatial representations. Although widely used, this term remains ambiguous. The aim of this book is two-fold: to examine the most noteworthy studies (in laboratory settings) which have contributed during the last five decades to a better understanding of animal spatial representations; and to present a realistic picture of cognitive maps. Spatial tests designed by psychologists are useful tools for understanding the brain substrates of spatial memory. Conversely, brain treatments allow us to analyze the complex psychological mechanisms underlying spatial orientation. Within this interdisciplinary context, it is extremely important to take stock of a notion used (and sometimes misused) in cognitive neurosciences.