Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
ANTISACCADES AND SMOOTH-PURSUIT EYE TRACKING AND SCHIZOTYPY
Autore:
ODRISCOLL GA; LENZENWEGER MF; HOLZMAN PS;
Indirizzi:
MCGILL UNIV,DEPT PSYCHOL,1205 DR PENFIELD AVE,STEWART BIOL SCI BLDG MONTREAL PQ H3A 1B1 CANADA MCGILL UNIV,DEPT PSYCHIAT MONTREAL PQ H3A 1B1 CANADA CORNELL UNIV,LAB EXPT PSYCHOPATHOL ITHACA NY 00000 CORNELL UNIV,COLL MED,DEPT PSYCHIAT NEW YORK NY 00000 HARVARD UNIV,DEPT PSYCHOL CAMBRIDGE MA 02138 HARVARD UNIV,SCH MED,DEPT PSYCHIAT BOSTON MA 02115 MCLEAN HOSP BELMONT MA 02178
Titolo Testata:
Archives of general psychiatry
fascicolo: 9, volume: 55, anno: 1998,
pagine: 837 - 843
SICI:
0003-990X(1998)55:9<837:AASETA>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; SPATIAL WORKING-MEMORY; CARD SORTING TEST; SPECTRUM PERSONALITY-DISORDERS; SCHIZOPHRENIC-PATIENTS; PERCEPTUAL ABERRATIONS; MOVEMENT IMPAIRMENT; PSYCHOSIS PRONENESS; PHYSICAL ANHEDONIA; VOLUNTARY CONTROL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Citazioni:
61
Recensione:
Indirizzi per estratti:
Citazione:
G.A. Odriscoll et al., "ANTISACCADES AND SMOOTH-PURSUIT EYE TRACKING AND SCHIZOTYPY", Archives of general psychiatry, 55(9), 1998, pp. 837-843

Abstract

Background: Eye tracking deficits are one of a few widely validated behavioral markers of risk for schizophrenia. Recently, it has been proposed that antisaccade performance may also constitute a marker of schizophrenia risk. This study investigated whether eye tracking and antisaccade deficits could be found in another population with putative liability to schizophrenia-nonclinical subjects with elevated scores on a psychometric index of perceptual aberrations. Methods: Subjects were55 university students who received either high or normal scores on the Perceptual Aberration Scale, a measure of schizotypy indexing body image and perceptual distortions. Subjects completed a smooth pursuit eye tracking task and an antisaccade task. Eye movements were monitored using an infrared limbus tracker. Results: Subjects with high Perceptual Aberration Scale scores (putative ''schizotypes'') had lower pursuit quality and a lower percentage correct on the antisaccade task than the controls. The 2 groups did not differ in antisaccade or error latencies. The increase in antisaccade errors in the schizotypes was accounted for almost entirely by an increase in perseverative errors, butvirtually no difference between groups on random errors. Antisaccade performance was significantly related to pursuit quality. Conclusions:Subjects with elevated Perceptual Aberration Scale scores have performance deficits on oculomotor tasks that have been linked to latent liability to schizophrenia, namely, smooth pursuit and antisaccade performance. The antisaccade errors in the schizotype group were primarily perseverations, a behavioral pattern often associated with frontal lobedysfunction and observed in the performance of schizophrenic patients.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/01/20 alle ore 16:52:59