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Potentiation rather than distraction in a trace fear conditioning procedure

Pezze, Marie A.; Marshall, Hayley J.; Cassaday, Helen J.

Authors

Marie A. Pezze

Hayley J. Marshall

HELEN CASSADAY HELEN.CASSADAY@NOTTINGHAM.AC.UK
Professor of Behavioural Neuroscience



Abstract

Trace conditioning procedures are defined by the introduction of a trace interval between conditioned stimulus (CS, e.g. noise or light) offset and unconditioned stimulus (US, e.g. footshock). The introduction of an additional stimulus as a distractor has been suggested to increase the attentional demands of the task and to extend the usefulness of the behavioural model. In Experiment 1, the CS was noise and the distractor was provided by an intermittent light. In Experiment 2, the CS was light and the distractor was provided by an intermittent noise. In both experiments, the introduction of a 10s trace interval weakened associative learning compared with that seen in a 0s delay conditioned group. However, there was no consistent evidence of distraction. On the contrary, in Experiment 1, associative learning was stronger (in both trace and delay conditioned groups) for rats conditioned also in the presence of the intermittent light. In Experiment 2, there was no such effect when the roles of the stimuli were reversed. The results of Experiment 2 did however confirm the particular salience of the noise stimulus. The finding of increased associative learning dependent on salience is consistent with arousal-mediated effects on associative learning.

Journal Article Type Article
Publication Date Jul 1, 2016
Journal Behavioural Processes
Print ISSN 0376-6357
Electronic ISSN 0376-6357
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 128
Pages 41-61
APA6 Citation Pezze, M. A., Marshall, H. J., & Cassaday, H. J. (2016). Potentiation rather than distraction in a trace fear conditioning procedure. Behavioural Processes, 128, 41-61. https://doi.org/10.1016/j.beproc.2016.04.003
DOI https://doi.org/10.1016/j.beproc.2016.04.003
Keywords Trace conditioning; Conditioned emotional response; Attention; Distractor; Potentiation
Publisher URL http://www.sciencedirect.com/science/article/pii/S037663571630081X
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
Additional Information This article is maintained by: Elsevier; Article Title: Potentiation rather than distraction in a trace fear conditioning procedure; Journal Title: Behavioural Processes; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.beproc.2016.04.003; Content Type: article; Copyright: © 2016 The Authors. Published by Elsevier B.V.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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