Cited by 141Olfactory and Sensory Function StudiesMemory and Neural MechanismsNeuroendocrine regulation and behavior

Unique neural circuitry for neonatal olfactory learning

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Moriceau, Stephanie, Sullivan, Regina M.·2004·The Journal of Neuroscience

Abstract

Imprinting ensures that the infant forms the caregiver attachment necessary for altricial species survival. In our mammalian model of imprinting, neonatal rats rapidly learn the odor-based maternal attachment. This rapid learning requires reward-evoked locus ceruleus (LC) release of copious amounts of norepinephrine (NE) into the olfactory bulb. This imprinting ends at postnatal day 10 (P10) and is associated with a dramatic reduction in reward-evoked LC NE release. Here we assess whether the functional emergence of LC alpha2 inhibitory autoreceptors and the downregulation of LC alpha1 excitatory autoreceptors underlie the dramatic reduction in NE release associated with termination of the sensitive period. Postsensitive period pups (P12) were implanted with either LC or olfactory bulb cannulas, classically conditioned with intracranial drug infusions (P14), and tested for an odor preference (P15). During conditioning, a novel odor was paired with either olfactory bulb infusion of abeta-receptor agonist (isoproterenol) to assess the target effects of NE or direct LC cholinergic stimulation combined with alpha2 antagonists and alpha1 agonists in a mixture to reinstate neonatal levels of LC autoreceptor activity to assess the source of NE. Pups learned an odor preference when the odor was paired with either olfactory bulb isoproterenol infusion or reinstatement of neonatal LC receptor activity. These results suggest that LC autoreceptor functional changes rather than olfactory bulb changes underlie sensitive period termination.

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Crossref · 10.1523/jneurosci.4578-03.2004

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Authors
Moriceau, S., & Sullivan, R. M.
Affiliations
University of Oklahoma (US)
Venue
The Journal of Neuroscience
Published
2004-02-04
Volume
24
Issue
5
Pages
1182-1189
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1963661711
Cited by
141
References
106
Citations by year
2026: 4 · 2025: 2 · 2024: 3 · 2023: 3 · 2021: 4 · 2020: 2 · 2019: 7 · 2018: 6 · 2017: 5 · 2016: 10 · 2015: 6 · 2014: 9 · 2013: 6 · 2012: 9
FWCI
4.00
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
Funders
  • National Science Foundation (0117234)
  • University of Oklahoma
  • Oklahoma Center for the Advancement of Science and Technology
  • National Institute of Child Health and Human Development
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD33402, R01HD033402)
Topics
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
locus coeruleus, noradrenaline release, olfactory bulb, neonatal rats, classical conditioning, isoproterenol, cholinergic stimulation
MeSH terms
Acetylcholine, Adrenergic alpha-Agonists, Animals, Animals, Newborn, Choice Behavior, Critical Period, Psychological, Drug Administration Routes, Female, Imprinting, Psychological, Infusion Pumps, Learning, Locus Coeruleus, Male, Nerve Net, Norepinephrine, Olfactory Bulb, Olfactory Pathways, Phenylephrine, Smell, Cholinergic Agents, Maze Learning, Rats, Long-Evans, Rats

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