Cited by 119Stress Responses and CortisolMemory and Neural MechanismsNeuroendocrine regulation and behavior

Rodent model of infant attachment learning and stress

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Moriceau, Stephanie, Roth, Tania L., Sullivan, Regina M.·2010·Developmental Psychobiology

Abstract

Here we review the neurobiology of infant odor learning in rats, and discuss the unique role of the stress hormone corticosterone (CORT) in the learning necessary for the developing rat. During the first 9 postnatal (PN) days, infants readily learn odor preferences, while aversion and fear learning are attenuated. Such restricted learning may ensure that pups only approach their mother. This sensitive period of preference learning overlaps with the stress hyporesponsive period (SHRP, PN4–14) when pups have a reduced CORT response to most stressors. Neural underpinnings responsible for sensitive‐period learning include increased activity within the olfactory bulb and piriform “olfactory” cortex due to heightened release of norepinephrine from the locus coeruleus. After PN10 and with the decline of the SHRP, stress‐induced CORT release permits amygdala activation and facilitates learned odor aversions and fear. Remarkably, odor preference and attenuated fear learning can be reestablished in PN10–15 pups if the mother is present, an effect due to her ability to suppress pups' CORT and amygdala activity. Together, these data indicate that functional changes in infant learning are modified by a unique interaction between the developing CORT system, the amygdala, and maternal presence, providing a learning system that becomes more flexible as pups mature. © 2010 Wiley Periodicals, Inc. Dev Psychobiol 52: 651–660, 2010.

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  • Maternal separation in rodent pups is associated with greater LHPA axis reactivity.

    “Maternal separation in rodent pups is associated with greater LHPA axis reactivity (Moriceau et al., 2010), accelerated amygdala development (Moriceau and Sullivan, 2006, Ono et al., 2008), increased anxiety-like behaviors (Romeo et al., 2003), and more social instability in adulthood (Kikusui and Mori, 2009).”

    From The impact of developmental timing for stress and recovery (2015) · cites this paper as Moriceau et al., 2010

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  1. Debiec J LeDoux JE 2006 Noradrenergic signaling in the amygdala contributes to the reconsolidation of fear memory: Treatment implications for PTSD Annals of the New York Academy of Sciences 1071 521 524 16891611
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Authors
Moriceau, S., Roth, T. L., & Sullivan, R. M.
Affiliations
  • University of Alabama at Birmingham (US)
  • Nathan Kline Institute for Psychiatric Research (US)
Venue
Developmental Psychobiology
Publisher
Wiley
Published
2010-08-20
Volume
52
Issue
7
Pages
651-660
ISSN
  • 0012-1630 (ISSN-L)
  • 1098-2302
OpenAlex
W2137060882
Cited by
119
References
110
Citations by year
2026: 2 · 2025: 1 · 2024: 7 · 2023: 5 · 2022: 5 · 2021: 6 · 2020: 9 · 2019: 5 · 2018: 5 · 2017: 8 · 2016: 10 · 2015: 7 · 2014: 12 · 2013: 12 · 2012: 12
FWCI
1.05
Type
journal article
Language
en
Open access
Locations
  • Developmental Psychobiology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Deafness and Other Communication Disorders (DC-009910, R01DC009910)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
infant attachment, corticosterone, stress hyporesponsive period, maternal presence, amygdala, olfactory bulb, piriform cortex, norepinephrine, locus coeruleus, fear learning, aversion learning, sensitive period, postnatal development
MeSH terms
Aging, Amygdala, Animals, Animals, Newborn, Association Learning, Corticosterone, Fear, Locus Coeruleus, Maternal Behavior, Motor Activity, Norepinephrine, Object Attachment, Odorants, Olfactory Bulb, Stress, Psychological, Rats

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