One of the traditional views of self deception has been in terms of a dynam
ically-driven defense mechanism which is employed in order to enhance self-
esteem by denying contradictory evidence. Denial is evident during stressfu
l events in everyday life, as well as in cases of mental and somatic impair
ments. A detailed analysis of a specific neurological syndrome, prosopagnos
ia, where covert recognition of familiar faces may coexist with lack of ove
rt recognition, demonstrates the inapplicability of the dynamic interpretat
ion of self-deception in terms of denial to some neurological syndromes, an
d the usefulness of a new conceptualization of this process in terms of dis
sociation between modular and central processes. it is proposed that self-d
eception be considered a complex process which may be conceived of as a def
ense mechanism in everyday life, and as a product of functional dissociatio
n in neurological syndromes.