The DOI matches its Crossref record; 111 of the 111 references it cites were found in a registry or an index.
Unique Neural Circuitry for Neonatal Olfactory Learning
Open accessAbstract
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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“odors associated with early-life experiences acquire a rewarding value that promotes behaviors essential for survival [65].”
From Positive early-life olfactory memory is rooted in the olfactory bulb and triggers large-scale changes beyond the olfactory system (2026) · cites this paper as [65]
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Metadata
- Authors
- Moriceau, S., & Sullivan, R. M.
- Affiliations
- University of Oklahoma (US)
- ORCID
- Sullivan, Regina M.
- Venue
- The Journal of Neuroscience
- Publisher
- Society for Neuroscience
- Published
- 2004-02-04
- Volume
- 24
- Issue
- 5
- Pages
- 1182-1189
- ISSN
- 0270-6474 (ISSN-L)
- 1529-2401
- PMC
- PMC1868533
- 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
- hybrid
- doi.org
- Licence
- 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
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › 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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