From No Subject - Encyclopedia of Lacanian Psychoanalysis
In the mirror stage the infant sees its reflection in the mirror as a whole/synthesis, and this perception causes, by contrast, the perception of its own body (which lacks motor coordination at this stage) as divided and fragmented.
I have noticed in the course of my psychoanalytical work that the psychological state of a man in an attitude of reflection is entirely different from that of a man who is observing his psychic processes. In reflection there is a greater play of psychic activity than in the most attentive selfobservation; this is shown even by the tense attitude and the wrinkled brow of the man in a state of reflection, as opposed to the mimic tranquillity of the man observing himself.
- Template:IoD Ch. 2