"...Only after a long conversation with the patient, one may note that at times he utterly confuses events and that he remembers absolutely nothing about what goes on around him: he does not remember whether he has had his dinner, whether he was out of bed. On occassion the patient forgets what happened to him just an instant ago: you came in, conversed with him and stepped out for one minute; then you come in again and the patient has absolutely no recollection that you had already been with him..."

S.S. Korsakoff in Oscar-Berman, M. (1980) "Neuropsychological Consequences of Long-term Chronic Alcoholism".