15(Tanaka, 1996; Brincat and Connor, 2004). The inferotemporal cortex is usually investigated in the macaque monkey, not humans, but similar mechanisms are likely to operate in the human brain. There have also been claims that high-level visual neurons in the human brain could be coding for the identities of single individuals (Quiroga et al., 2005). However, a more detailed analysis of the results shows that this is an exaggerated interpretation: single neurons are probably responding to several different people (Quiroga et al., 2008). The property of ignoring less meaningful details is called invariance (DiCarlo and Cox, 2007).