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Titolo:
Visual search in schizophrenia: latent inhibition and novel pop-out effects
Autore:
Lubow, RE; Kaplan, O; Abramovich, P; Rudnick, A; Laor, N;
Indirizzi:
Tel Aviv Univ, Dept Psychol, IL-69978 Ramat Aviv, Israel Tel Aviv Univ Ramat Aviv Israel IL-69978 ol, IL-69978 Ramat Aviv, Israel Tel Aviv Mental Hlth Ctr, Ramat Chen, Israel Tel Aviv Mental Hlth Ctr Ramat Chen Israel Hlth Ctr, Ramat Chen, Israel
Titolo Testata:
SCHIZOPHRENIA RESEARCH
fascicolo: 1-2, volume: 45, anno: 2000,
pagine: 145 - 156
SICI:
0920-9964(20000929)45:1-2<145:VSISLI>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRONE NORMAL SUBJECTS; RECEPTOR-BINDING; SWITCHING MODEL; SEX-DIFFERENCES; ATTENTION; DOPAMINE; PREEXPOSURE; STIMULI; GENDER; DISTRACTOR;
Keywords:
attention; gender; latent inhibition; novel pop-out; schizophrenia; visual search;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
54
Recensione:
Indirizzi per estratti:
Indirizzo: Lubow, RE Tel Aviv Univ, Dept Psychol, IL-69978 Ramat Aviv, Israel Tel Aviv Univ Ramat Aviv Israel IL-69978 78 Ramat Aviv, Israel
Citazione:
R.E. Lubow et al., "Visual search in schizophrenia: latent inhibition and novel pop-out effects", SCHIZOPHR R, 45(1-2), 2000, pp. 145-156

Abstract

A visual search task was used to assess attentional function in a mixed group of schizophrenic patients and in normal controls. Subjects identified presence or absence of a unique shape presented with homogeneous distracters. Response time (RT) was examined as a function of prior experience with target, distracter, or both. On each trial, targets and/or distracters were either novel or familiar. Schizophrenic patients were slower than controls in all conditions. In the test phase, three target/distractor conditions were examined (PE - target and distracters preexposed but reversed; NPE - target novel and distracters pre-exposed; NOV - novel target and distracters). As predicted, normal controls, but not schizophrenics, showed latent inhibition (LI: PE minus NPE). The latter finding was due to the absence of normal LI in female patients. A novel pop-out effect (NOV minus NPE) was obtained which did not interact with any of the other variables. The results suggest that the LI effect is indeed related to the processing of irrelevant stimuli, and that, at least female schizophrenic patients process such stimulidifferently from controls. Past inconsistencies in the LI-schizophrenia literature may be the result of disproportionate gender compositions in patient and control groups. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/01/20 alle ore 12:59:20