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Titolo:
BACKWARD-MASKING AND SKIN-CONDUCTANCE RESPONSES AFTER CONDITIONING TONONFEARED BUT FEAR-RELEVANT STIMULI IN FEARFUL SUBJECTS
Autore:
SOARES JJF; OHMAN A;
Indirizzi:
UPPSALA UNIV,DEPT CLIN PSYCHOL,POB 1225 S-75141 UPPSALA SWEDEN UPPSALA UNIV,DEPT CLIN PSYCHOL,POB 1225 S-75141 UPPSALA SWEDEN
Titolo Testata:
Psychophysiology
fascicolo: 5, volume: 30, anno: 1993,
pagine: 460 - 466
SICI:
0048-5772(1993)30:5<460:BASRAC>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
POTENTIALLY PHOBIC STIMULI; ELECTRODERMAL RESPONSES; PREPAREDNESS; QUESTIONNAIRES; EXTINCTION;
Keywords:
CONDITIONING; FEAR-RELEVANT STIMULI; FEARFUL SUBJECTS; BACKWARD MASKING; SKIN CONDUCTANCE RESPONSES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social Sciences Citation Index
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
J.J.F. Soares e A. Ohman, "BACKWARD-MASKING AND SKIN-CONDUCTANCE RESPONSES AFTER CONDITIONING TONONFEARED BUT FEAR-RELEVANT STIMULI IN FEARFUL SUBJECTS", Psychophysiology, 30(5), 1993, pp. 460-466

Abstract

The present study examined two issues. Are skin conductance responsesconditioned to fear-relevant stimuli, as contrasted with responses conditioned to fear-irrelevant stimuli, elicited after merely an automatic, nonconscious analysis of the stimulus content? Do fearful subjectsshow better conditioning to nonfeared but fear-relevant stimuli (e.g., conditioning to spiders in snake-fearing subjects) than do nonfearful subjects? Subjects afraid of snakes, but not of spiders, or vice versa (n = 32) and nonfearful subjects (n = 32) were shown either fear-relevant stimuli (snakes or spiders and rats) or fear-irrelevant stimuli(flowers and mushrooms) in a differential conditioning paradigm, where one of the stimuli was followed by an electric shock. During a subsequent extinction phase, the conditioned stimuli were presented under backward masking conditions, preventing their conscious recognition. Consistent with our hypothesis, during the masked extinction of the conditioned stimuli, differential skin conductance responses to conditioning and control stimuli remained only for subjects conditioned to fear-relevant stimuli. Both fearful and nonfearful control subjects had significantly larger differential electrodermal responses to fear-relevant than to fear-irrelevant stimuli. However, contrary to our hypothesis, fearful subjects did not show enhanced conditionability to their nonfeared but fear-relevant stimuli as compared with nonfearful control subjects.

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Documento generato il 05/07/20 alle ore 22:14:08