It is accepted that ''primary awareness'' may emerge from the integrat
ion of two classes of information. It is unclear, however, why this ca
nnot take place within the comparator rather than in conjunction with
feedback to the perceptual systems. The model has plausibility in rela
tion to the continuity of conscious experience in the normal waking st
ate and may be extended to encompass certain aspects of the ''sense of
self'' which are frequently disrupted in psychotic patients.