title: Icon formation in chronic schizophrenics.
mesh_terms: D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D006801:Humans; D008568:Memory / Q000502:physiology*; D008875:Middle Aged; D011601:Psychophysics; D012559:Schizophrenia / Q000503:physiopathology*; D014796:Visual Perception / Q000502:physiology*