Recent developments in affective neuroscience seem to demand, for the first time since the advent of neuropsychoanalysis, a revision of one of Freud's most fundamental concepts. Join us at this important meeting, to consider whether the neuroscientific evidence that will be presented indicates that the primitive part of the mind which Freud described as the 'id' is intrinsically conscious, and the reality-oriented 'ego' is unconscious -- and that it derives its consciousness from the endogenous id rather than from sensory perception.