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Author (up) Weike, A.I.; Schupp, H.T.; Hamm, A.O.
Title Fear acquisition requires awareness in trace but not delay conditioning Type Journal Article
Year 2007 Publication Psychophysiology Abbreviated Journal
Volume 44 Issue 1 Pages 170-180
Keywords fear acquisition; awareness; trace conditioning; delay conditioning; contingency awareness; Conditioned Fear; Conditioned Stimulus; Fear; Startle Reflex
Abstract The present study explored fear acquisition in differential delay versus trace conditioning in regard to the potential role of the acquired contingency awareness. One of two neutral pictures (CS+) either coterminated with (delay group; n=32) or was followed by the aversive unconditioned stimulus (UCS) after CS offset (trace group; n=32), while startle blink and skin conductance responses (SCR) were measured. As expected, the acquisition of conditioned startle potentiation in delay conditioning was independent of contingency awareness. In contrast, fear-potentiated startle in trace conditioning was only observed for those participants who were aware of the CS-UCS contingencies. SCR conditioning was generally only obtained for aware participants. The present results suggest a more implicit learning process in delay fear conditioning, whereas the explicit acquisition of contingency awareness might be a prerequisite for trace fear conditioning. (PsycINFO Database Record (c) 2007 APA, all rights reserved) (from the journal abstract)
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Publisher Blackwell Publishing Place of Publication Weike, Almut I., University of Greifswald, Department of Psychology, Franz-Mehring-Str. 47, 17487, G Editor
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Notes 0048-57721469-8986Accession Number: 2007-00662-019. First Author & Affiliation: Weike, Almut I.; University of Greifswald, Department of Psychology, Greifswald, Germany. Other Journal Title: Psychophysiology. Release Date: 20070122. Publication Type: Journal (0100) Peer Reviewed Journal (0110). Media Covered: Electronic. Media Available: Electronic; Print. Document Type: Journal Article. Language: English. Major Descriptor: Awareness; Conditioned Fear; Conditioned Stimulus; Fear; Startle Reflex. Classification: Human Experimental Psychology (2300) . Population: Human (10) Male (30) Female (40) . Location: Germany. Age Group: Adulthood (18 yrs & older) (300) . Grant Information: This study was supported by grants of the German Research Foundation (DFG) to Almut Weike (We 2762/3-1) and Alfons Hamm (Ha 1593/10-2). Methodology: Empirical Study; Quantitative Study. References Available: Y. Approved no
Call Number refbase @ user @ Weike2007a Serial 4486
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