Cited by 78Memory and Neural MechanismsNicotinic Acetylcholine Receptors StudyNeuroscience and Neuropharmacology Research

Nicotine enhances trace cued fear conditioning but not delay cued fear conditioning in C57BL/6 mice

Gould, Thomas J., Feiro, Olivia, Moore, Dan·2004·Behavioural Brain Research

Abstract

Nicotine facilitates hippocampus-dependent contextual but not hippocampus-independent cued delay fear conditioning. To test if the effects of nicotine are specific to contextual fear conditioning or would extend to another hippocampus-dependent version of fear conditioning, we compared the effects of nicotine on cued delay and cued trace fear conditioning in male and female C57BL/6 mice. Unlike cued delay fear conditioning, cued trace fear conditioning is hippocampus dependent. Thus, if nicotine enhances hippocampus-dependent fear conditioning, nicotine should enhance trace fear conditioning. For both trace and delay conditioning, five 30 s, 85 dB white noise conditioned stimuli (CS) were paired with five 2 s, 0.5 mA footshock unconditioned stimuli (US). In the trace paradigm, a 30-s period was inserted between CS offset and US onset. The CS and US co-terminated in the delay paradigm. Testing occurred 24 h later. The data indicate that nicotine (given on training and testing day) enhances trace but not delay cued fear conditioning. No sex differences were found. For delay cued fear conditioning a high level of freezing to the CS was found. Thus, a second experiment examined if the lack of enhancement of delay cued fear conditioning by nicotine was due to a ceiling effect. The CS duration was decreased to 15 s and only one CS-US pairing was used for delay and trace cued fear conditioning. Although overall levels of freezing to the cue were lower in the second experiment, nicotine still enhanced trace fear conditioning but did not enhance delay fear conditioning. Taken together, the results of the present experiments suggest that nicotine enhances hippocampus-dependent versions of fear conditioning.

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  • Nicotine enhances hippocampus-dependent contextual and cued trace fear conditioning, but not cued delay fear conditioning.

    “Nicotine is known to enhance hippocampus-dependent contextual and cued trace fear conditioning, but not cued delay fear conditioning [198].”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [198]

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Authors
Gould, T. J., Feiro, O., & Moore, D.
Affiliations
Temple University (US)
Corresponding author
Gould, Thomas J.
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2004-11
Volume
155
Issue
1
Pages
167-173
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2010171011
Cited by
78
References
4
Citations by year
2025: 1 · 2024: 1 · 2023: 1 · 2019: 1 · 2018: 6 · 2017: 4 · 2016: 7 · 2015: 10 · 2014: 5 · 2013: 3 · 2012: 2
FWCI
2.53
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
nicotine, trace fear conditioning, delay fear conditioning, cued fear conditioning, hippocampal-dependent memory, contextual fear, freezing behavior, sex differences, C57BL/6 mice
MeSH terms
Analysis of Variance, Animals, Behavior, Animal, Conditioning, Classical, Cues, Fear, Female, Male, Mice, Inbred C57BL, Nicotine, Time Factors, Nicotinic Agonists, Mice

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