Cited by 74Memory and Neural MechanismsStress Responses and CortisolMemory Processes and Influences

Enduring effects of infant memories: infant odor-shock conditioning attenuates amygdala activity and adult fear conditioning

Sevelinges, Yannick, Moriceau, Stephanie, Holman, Parker, Miner, Cathrine, Muzny, Kyle, Gervais, Remi, Mouly, Anne-Marie, Sullivan, Regina M.·2007·Biological Psychiatry

Abstract

Background Early life adverse experience alters adult emotional and cognitive development. Here we assess early life learning about adverse experience and its consequences on adult fear conditioning and amygdala activity. Methods Neonatal rats were conditioned daily from 8-12 days-old with paired odor (conditioned stimulus, CS) .5mA shock, unpaired, odor-only, or naive (no infant conditioning). In adulthood, each infant training group was divided into three adult training groups: paired, unpaired or odor-only, using either the same infant CS odor, or a novel adult CS odor without or with the infant CS present as context. Adults were cue tested for freezing (odor in novel environment), with amygdala (14)C 2-DG autoradiography and electrophysiology assessment. Results Infant paired odor-shock conditioning attenuated adult fear conditioning, but only if the same infant CS odor was used. The (14)C 2-DG activity correlated with infant paired odor-shock conditioning produced attenuated amygdala but heightened olfactory bulb activity. Electrophysiological amygdala assessment further suggests early experience causes changes in amygdala processing as revealed by increased paired-pulse facilitation in adulthood. Conclusions This suggests some enduring effects of early life adversity (shock) are under CS control and dependent upon learning for their impact on later adult fear learning.

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Crossref · 10.1016/j.biopsych.2007.04.025

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  • Amygdala-dependent deficits are task-specific: amygdala hyperactivity underlies decreased social exploration in adolescence and depressive/anxiety-like behavior in adulthood, in parallel with impaired threat aversion learning and blunted amygdala activation during fear conditioning.

    “Amygdala-dependent deficits are expressed in a task-specific manner: amygdala hyperactivity underlies decreased social exploration in adolescence and depressive and anxiety-like behavior in adulthood (Fig. 2), in parallel with impaired ability to learn aversions to threat and blunted amygdala activation during fear conditioning (Raineki et al., 2012, Sevelinges et al., 2007, Sevelinges et al., 201”

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Authors
Sevelinges, Y., Moriceau, S., Holman, P., Miner, C., Muzny, K., Gervais, R., Mouly, A.-M., & Sullivan, R. M.
Affiliations
  • Lyon 1 Université (FR)
  • University of Oklahoma (US)
Corresponding author
Sullivan, Regina M.
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2007-11
Volume
62
Issue
10
Pages
1070-1079
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2166197054
Cited by
74
References
132
Citations by year
2026: 1 · 2023: 1 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 6 · 2018: 3 · 2017: 4 · 2016: 7 · 2015: 3 · 2014: 5 · 2013: 6 · 2012: 6
FWCI
3.99
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Agence Nationale de la Recherche (ANR-05-PNRA-1)
  • National Institute of Child Health and Human Development (HD33402)
  • Oklahoma Center for the Advancement of Science and Technology
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
childhood adversity, fear conditioning, amygdala, olfactory bulb, paired-pulse facilitation, contextual fear, freezing behavior, neonatal rats, [14C]2-deoxyglucose autoradiography
MeSH terms
Aging, Amygdala, Analysis of Variance, Animals, Animals, Newborn, Autoradiography, Avoidance Learning, Behavior, Animal, Conditioning, Classical, Deoxyglucose, Electric Stimulation, Evoked Potentials, Fear, Male, Memory, Odorants, Olfactory Bulb, Radiography, Reaction Time, Maze Learning, Rats, Long-Evans, Freezing Reaction, Cataleptic, Rats

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