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Titolo:
Valence-dependent modulation of psychophysiological measures: Is there consistency across repeated testing?
Autore:
Manber, R; Allen, JJB; Burton, K; Kaszniak, AW;
Indirizzi:
Univ Arizona, Dept Psychiat, Tucson, AZ USA Univ Arizona Tucson AZ USAUniv Arizona, Dept Psychiat, Tucson, AZ USA Univ Arizona, Dept Psychol, Tucson, AZ 85721 USA Univ Arizona Tucson AZ USA 85721 zona, Dept Psychol, Tucson, AZ 85721 USA
Titolo Testata:
PSYCHOPHYSIOLOGY
fascicolo: 5, volume: 37, anno: 2000,
pagine: 683 - 692
SICI:
0048-5772(200009)37:5<683:VMOPMI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
STARTLE REFLEX; EMOTION; ATTENTION; FEAR;
Keywords:
startle response; facial muscle response; repeated testing; valence modulation; arousal modulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Manber, R Stanford Univ, Dept Psychiat & Behav Sci, 401 Quarry Rd,Suite 3301, Stanford, CA 94305 USA Stanford Univ 401 Quarry Rd,Suite 3301 Stanford CA USA 94305 USA
Citazione:
R. Manber et al., "Valence-dependent modulation of psychophysiological measures: Is there consistency across repeated testing?", PSYCHOPHYSL, 37(5), 2000, pp. 683-692

Abstract

The present study used the picture perception paradigm to examine the extent to which three well-documented psychophysiological measures demonstrate consistency across time in response to emotional stimuli. The three measures were the eye-blink startle response and the activation in two facial muscle regions (zygomatic and corrugator). Twenty-seven young women were assessed on two occasions, 2 weeks apart. Whereas activation in the corrugator and zygomatic muscle regions demonstrated the predicted patterns at both assessments (with some attenuation in the zygomatic muscle regions), the startle response had limited consistency across the two assessments. The startle response revealed the predicted linear pattern of valence modulation duringthe first assessment. During the second assessment, startle magnitude response was a quadratic function of valence ratings and a linear function of arousal ratings. The unexpected pattern of startle response during the second session appeared to be related to the content of the pleasant slides, with action slides generating quadratic valence modulation and erotic slides continuing to exhibit the expected linear valence modulation.

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Documento generato il 18/01/20 alle ore 13:15:11