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Titolo:
TIMING AND AMPLITUDE OF SACCADES DURING PREDICTIVE SACCADIC TRACKING IN SCHIZOPHRENIA
Autore:
MCDOWELL JE; CLEMENTZ BA; WIXTED JT;
Indirizzi:
UNIV CALIF SAN DIEGO,DEPT PSYCHOL,0109,9500 GILMAN DR LA JOLLA CA 92092 UNIV CALIF SAN DIEGO,DEPT PSYCHOL LA JOLLA CA 92092
Titolo Testata:
Psychophysiology
fascicolo: 1, volume: 33, anno: 1996,
pagine: 93 - 101
SICI:
0048-5772(1996)33:1<93:TAAOSD>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRONTAL EYE-FIELD; PARKINSONS-DISEASE; AFFECTIVE-DISORDERS; VOLUNTARY CONTROL; MOVEMENTS; LESIONS; PSYCHOPHYSIOLOGY; ABNORMALITIES; RESPONSES; DYNAMICS;
Keywords:
SCHIZOPHRENIA; SACCADES; PREDICTIVE SACCADIC TRACKING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
48
Recensione:
Indirizzi per estratti:
Citazione:
J.E. Mcdowell et al., "TIMING AND AMPLITUDE OF SACCADES DURING PREDICTIVE SACCADIC TRACKING IN SCHIZOPHRENIA", Psychophysiology, 33(1), 1996, pp. 93-101

Abstract

Schizophrenia patients have ocular motor abnormalities. It has been hypothesized that these abnormalities are associated with frontal eye field pathology. If so, schizophrenia patients should have difficultiesdecreasing saccadic reaction times in response to predictably moving targets. To evaluate the frontal eye field hypothesis, 25 schizophrenic and 26 nonpsychiatric subjects completed predictive saccadic tracking tasks. The groups demonstrated equivalent decreases in saccadic reaction times over consecutive trials. Schizophrenia patients, however, had faster reaction times and shorter amplitude saccades than nonpsychiatric subjects. The shorter amplitude saccades were made regardless ofreaction time, perhaps an antipsychotic medication effect. The reaction time results are unlikely to be an effect of treatment with antipsychotic medication and are inconsistent with the hypothesis that schizophrenia patients have frontal eye field pathology.

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Documento generato il 21/09/20 alle ore 06:34:15