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Titolo:
Fear appears fast: Temporal course of startle reflex potentiation in animal fearful subjects
Autore:
Globisch, J; Hamm, AO; Esteves, F; Ohman, A;
Indirizzi:
Univ Greifswald, Inst Psychol, D-17487 Greifswald, Germany Univ Greifswald Greifswald Germany D-17487 , D-17487 Greifswald, Germany Univ Lusofona Humanidades & Tecnol, Lisbon, Portugal Univ Lusofona Humanidades & Tecnol Lisbon Portugal ol, Lisbon, Portugal Karolinska Inst, Stockholm, Sweden Karolinska Inst Stockholm SwedenKarolinska Inst, Stockholm, Sweden
Titolo Testata:
PSYCHOPHYSIOLOGY
fascicolo: 1, volume: 36, anno: 1999,
pagine: 66 - 75
SICI:
0048-5772(199901)36:1<66:FAFTCO>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
SKIN-CONDUCTANCE RESPONSES; ACOUSTIC STARTLE; EMOTIONAL PERCEPTION; ANTICIPATORY ANXIETY; EYEBLINK REFLEX; BLINK REFLEX; MODULATION; STIMULI; PROBE; ATTENTION;
Keywords:
fear; phobia; prepulse inhibition; startle eyeblink; skin conductance; blood pressure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
68
Recensione:
Indirizzi per estratti:
Indirizzo: Hamm, AO Univrmanyfswald, Inst Psychol, Franz Mehring Str 47, D-17487 Greifswald, Ge Univ Greifswald Franz Mehring Str 47 Greifswald Germany D-17487
Citazione:
J. Globisch et al., "Fear appears fast: Temporal course of startle reflex potentiation in animal fearful subjects", PSYCHOPHYSL, 36(1), 1999, pp. 66-75

Abstract

The temporal course of startle reflex modulation and autonomic response patterns to Fear-relevant and fear-irrelevant pictures in subjects with high and low levels of animal fear was investigated. Thirty-eight high-fear and 48 low-fear volunteers viewed photos of snakes and spiders and pictures of neutral and pleasant content. The slides were presented for 6 s or for only150 ms, depending on the group. Acoustic startle probes were presented at five different times after slide onset. Relative potentiation of the startle responses started 300 ms after onset of snake/spider pictures in fearful subjects. This fear-potentiated startle effect was maintained for the laterprobe times and was identical in the 150-ms condition. Fear-relevant pictures also prompted a sympathetically dominated autonomic response profile infearful persons. These data support the idea that fear can be activated very rapidly, requiring only minimal stimulus input.

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Documento generato il 15/08/20 alle ore 18:43:11