title: Useful visual field in patients with schizophrenia: a choice reaction time study.
abstract: This study examined the size of the useful visual field in patients (9 men, 6 women) with schizophrenia. A choice reaction task was conducted, and performances at 2.5, 5, 7, 10, and 25 degrees in both visual fields were measured. Three key findings were shown. First, patients had slower choice reaction times (choice RTs) than normal controls. Second, patients had slower choice RTs in the right visual field than in the left visual field. Third, patients and normal controls showed the same U-shaped choice RT pattern. The first and second findings were consistent with those of other studies. The third finding was a clear indication of the patients' performance in peripheral vision, and a comparison with normal controls suggested that there was no difference in the size of the useful visual field, at least within
authors.affiliation: Department of Psychology, University of Toyama. yukiy2001@hotmail.com
authors.forename: Yukihisa
authors.initials: Y
authors.lastname: Matsuda
authors.forename: Mie
authors.initials: M
authors.lastname: Matsui
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Tonoya
authors.forename: Naokuni
authors.initials: N
authors.lastname: Ebihara
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Kurachi
mesh_terms: D000293:Adolescent; D000328:Adult; D001288:Attention; D002755:Choice Behavior; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D009949:Orientation; D011930:Reaction Time; D012016:Reference Values; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology; D014794:Visual Fields; D055815:Young Adult