In depression's symptomatology, if is classical to find symptoms relat
ed to cognitive impairments. But what kind of impairments? Generally s
peaking, memory and concentration deficit come to mind. One objective
of cognitive sciences is to specify in dialectic with models of cognit
ive functioning based upon experimental paradigms, the disruption in i
nformation processing in subjects who suffer from particular pathologi
es, A thorough investigation of cognitive functions such as: language,
attention and memory tend to show that depression is a cognitive diso
rder. A critical literature review based on clinical neuropsychologica
l data of mood disturbance takes account of the eventual possibility o
f a relation between affect and cognition, Brain imaging rinforces tha
t possibility.