title: Influence of individual differences in Behavioral Inhibition System on the magnitude and time course of the fear-potentiated startle.
abstract: Previous research has shown that the startle reflex is potentiated during experimentally induced anxiety (fear-potentiated startle). In the present study, the magnitude and time course of the startle blink reflex were examined among 35 undergraduates scoring one standard deviation above (n = 14) or below (n = 21) the mean in a self-report measure of sensitivity to punishment (SP) in a paradigm involving the anticipation of electric shocks. Contrary to our predictions, SP did not relate to differences in the magnitude or in the time course of fear-potentiated startle. Our data do not support an association between this individual differences variable and the fear-potentiated startle.
authors.affiliation: Departament de Psiquiatria i de Medicina Legal, Universitat Autònoma de Barcelona, Catalonia, Spain. mafr@copc.es
authors.forename: Miquel-Angel
authors.initials: MA
authors.lastname: Fullana
authors.forename: Xavier
authors.initials: X
authors.lastname: Caseras
authors.forename: Jordi
authors.initials: J
authors.lastname: Riba
authors.forename: Manel
authors.initials: M
authors.lastname: Barbanoj
authors.forename: Rafael
authors.initials: R
authors.lastname: Torrubia
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001767:Blinking / Q000502:physiology*; D004307:Dose-Response Relationship, Radiation; D004576:Electromyography / Q000379:methods; D005239:Fear / Q000523:psychology*; D005260:Female; D006801:Humans; D007206:Individuality; D007266:Inhibition, Psychological; D008297:Male; D013216:Reflex, Startle / Q000502:physiology*; D013997:Time Factors