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Author Weike, A.I.; Schupp, H.T.; Hamm, A.O. url  openurl
  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  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  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 (up) refbase @ user @ Weike2007b Serial 4487  
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