The use of the spiral after-effect test to differentiate chronic schizophrenics from chronic organics.
D000360:Afterimage; D000367:Age Factors; D002908:Chronic Disease; D003937:Diagnosis, Differential; D004522:Educational Status; D005366:Figural Aftereffect; D005556:Form Perception; D006801:Humans; D008297:Male; D009039:Motion Perception; D019965:Neurocognitive Disorders / Q000175:diagnosis*; D011581:Psychological Tests; D012399:Rotation; D012559:Schizophrenia / Q000175:diagnosis*; D014792:Visual Acuity