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Fear potentiated startle at short intervals following conditioned stimulus onset during delay but not trace conditioning.
Psychophysiology. 2009 Jul; 46(4):880-8.P

Abstract

The latency of conditioned fear after delay and trace conditioning was investigated. Some argue that delay conditioning is not dependent on awareness. In contrast, trace conditioning, where there is a gap between the conditioned stimulus (CS) and the unconditioned stimulus (US), is assumed to be dependent on awareness. In the present study, a tone CS signaled a noise US presented 1000 ms after CS onset in the delay conditioning group. In the trace conditioning group, a 200-ms tone CS was followed by an 800-ms gap prior to US presentation. Fear-potentiated startle should be seen at shorter intervals after delay conditioning compared to trace conditioning. Analyses showed increased startle at 30, 50, 100, and 150 ms after CS onset following delay conditioning compared to trace conditioning. This implies that fear-relevant stimuli elicit physiological reactions before extended processing of the stimuli occur, following delay, but not trace conditioning.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Asli O
Department of Psychology, University of Tromsø, Tromsø, Norway. olea@psyk.uit.no
Kulvedrøsten S
No affiliation info available
Solbakken LE
No affiliation info available
Flaten MA
No affiliation info available

MeSH

Acoustic StimulationAdultBlinkingConditioning, ClassicalData Interpretation, StatisticalFearFemaleHumansLearningMaleMemory, Short-TermNoiseReflex, StartleUnconscious, PsychologyYoung Adult

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19386051

Citation

Asli, Ole, et al. "Fear Potentiated Startle at Short Intervals Following Conditioned Stimulus Onset During Delay but Not Trace Conditioning." Psychophysiology, vol. 46, no. 4, 2009, pp. 880-8.
Asli O, Kulvedrøsten S, Solbakken LE, et al. Fear potentiated startle at short intervals following conditioned stimulus onset during delay but not trace conditioning. Psychophysiology. 2009;46(4):880-8.
Asli, O., Kulvedrøsten, S., Solbakken, L. E., & Flaten, M. A. (2009). Fear potentiated startle at short intervals following conditioned stimulus onset during delay but not trace conditioning. Psychophysiology, 46(4), 880-8. https://doi.org/10.1111/j.1469-8986.2009.00809.x
Asli O, et al. Fear Potentiated Startle at Short Intervals Following Conditioned Stimulus Onset During Delay but Not Trace Conditioning. Psychophysiology. 2009;46(4):880-8. PubMed PMID: 19386051.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fear potentiated startle at short intervals following conditioned stimulus onset during delay but not trace conditioning. AU - Asli,Ole, AU - Kulvedrøsten,Silje, AU - Solbakken,Line E, AU - Flaten,Magne Arve, Y1 - 2009/04/06/ PY - 2009/4/24/entrez PY - 2009/4/24/pubmed PY - 2009/9/17/medline SP - 880 EP - 8 JF - Psychophysiology JO - Psychophysiology VL - 46 IS - 4 N2 - The latency of conditioned fear after delay and trace conditioning was investigated. Some argue that delay conditioning is not dependent on awareness. In contrast, trace conditioning, where there is a gap between the conditioned stimulus (CS) and the unconditioned stimulus (US), is assumed to be dependent on awareness. In the present study, a tone CS signaled a noise US presented 1000 ms after CS onset in the delay conditioning group. In the trace conditioning group, a 200-ms tone CS was followed by an 800-ms gap prior to US presentation. Fear-potentiated startle should be seen at shorter intervals after delay conditioning compared to trace conditioning. Analyses showed increased startle at 30, 50, 100, and 150 ms after CS onset following delay conditioning compared to trace conditioning. This implies that fear-relevant stimuli elicit physiological reactions before extended processing of the stimuli occur, following delay, but not trace conditioning. SN - 1540-5958 UR - https://www.unboundmedicine.com/medline/citation/19386051/Fear_potentiated_startle_at_short_intervals_following_conditioned_stimulus_onset_during_delay_but_not_trace_conditioning_ L2 - https://doi.org/10.1111/j.1469-8986.2009.00809.x DB - PRIME DP - Unbound Medicine ER -