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Author |
Weike, A.I.; Schupp, H.T.; Hamm, A.O. |
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Title |
Fear acquisition requires awareness in trace but not delay conditioning |
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Journal Article |
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2007 |
Publication |
Psychophysiology |
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44 |
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1 |
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170-180 |
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Keywords |
fear acquisition; awareness; trace conditioning; delay conditioning; contingency awareness; Conditioned Fear; Conditioned Stimulus; Fear; Startle Reflex |
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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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Blackwell Publishing |
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Weike, Almut I., University of Greifswald, Department of Psychology, Franz-Mehring-Str. 47, 17487, G |
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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. |
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Call Number |
refbase @ user @ Weike2007a |
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4486 |
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