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Titolo:
Smooth pursuit eye tracking and visual fixation in psychosis-prone individuals
Autore:
Gooding, DC; Miller, MD; Kwapil, TR;
Indirizzi:
Univ Wisconsin, Dept Psychol, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 , Dept Psychol, Madison, WI 53706 USA Univ Wisconsin, Dept Psychiat, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 Dept Psychiat, Madison, WI 53706 USA Univ N Carolina, Dept Psychol, Greensboro, NC 27412 USA Univ N Carolina Greensboro NC USA 27412 Psychol, Greensboro, NC 27412 USA
Titolo Testata:
PSYCHIATRY RESEARCH
fascicolo: 1, volume: 93, anno: 2000,
pagine: 41 - 54
SICI:
0165-1781(20000214)93:1<41:SPETAV>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCHIZOTYPAL PERSONALITY-DISORDER; HIGH-RISK PROJECT; SCHIZOPHRENIC-PATIENTS; MONOZYGOTIC TWINS; MAGICAL IDEATION; SOCIAL ANHEDONIA; MOVEMENT; ABNORMALITIES; PSYCHOPATHOLOGY; PERFORMANCE;
Keywords:
smooth pursuit eye tracking; visual fixation; schizotypy; social anhedonia; perceptual aberration; physical anhedonia; psychotic-like experiences;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Gooding, DC Univ Wisconsin, Dept Psychol, WJ Brogden Psychol Bldg,1202 W Johnson St, Madison, WI 53706 USA Univ Wisconsin WJ Brogden Psychol Bldg,1202 W Johnson St Madison WI USA 53706
Citazione:
D.C. Gooding et al., "Smooth pursuit eye tracking and visual fixation in psychosis-prone individuals", PSYCHIAT R, 93(1), 2000, pp. 41-54

Abstract

Subjects identified by Perceptual Aberration-Magical Ideation (Per-Mag) scores (n = 97), Social Anhedonia (SocAnh) scores (n = 45), and Physical Anhedonia (PhysAnh) scores (n = 31) as well as normal controls (n = 94), underwent psychophysiological and clinical assessment. This is the first published investigation of pursuit system functioning in three groups of questionnaire-identified at-risk individuals. Pursuit during a simple non-monitor tracking task was measured using root-mean-square error (RMSE) scores and pursuit gain scores. Fixation performance was measured in terms of number of saccades away from the central fixation point. The at-risk subjects were morelikely to display aberrant smooth pursuit tracking than controls, though there were no significant differences between the at-risk subjects endorsingitems relevant to positive-symptom schizotypy and those endorsing items pertaining to negative-symptom schizotypy. The groups did not differ significantly in their visual fixation performance. Participants were also evaluated for the presence of Axis I symptomatology and psychotic-like experiences. Neither the experimental subjects nor the control subjects displayed a significant association between ocular motor performance and psychotic-like experiences. These findings are consistent with prior evidence that pursuit tracking is a trait characteristic, independent of clinical status. (C) 2000Elsevier Science Ireland Ltd. All rights reserved.

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Documento generato il 25/01/20 alle ore 19:07:26