Cited by 61Neural dynamics and brain functionNeuroscience and Neuropharmacology ResearchSleep and Wakefulness Research

Maternal regulation of infant brain state

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Sarro, Emma C., Wilson, Donald A., Sullivan, Regina M.·2014·Current Biology

Abstract

Patterns of neural activity are critical for sculpting the immature brain, and disrupting this activity is believed to underlie neurodevelopmental disorders [1-3]. Neural circuits undergo extensive activity-dependent postnatal structural and functional changes [4-6]. The different forms of neural plasticity [7-9] underlying these changes have been linked to specific patterns of spatiotemporal activity. Since maternal behavior is the mammalian infant's major source of sensory-driven environmental stimulation and the quality of this care can dramatically affect neurobehavioral development [10], we explored, for the first time, whether infant cortical activity is influenced directly by interactions with the mother within the natural nest environment. We recorded spontaneous neocortical local field potentials in freely behaving infant rats during natural interactions with their mother on postnatal days ∼12-19. We showed that maternal absence from the nest increased cortical desynchrony. Further isolating the pup by removing littermates induced further desynchronization. The mother's return to the nest reduced this desynchrony, and nipple attachment induced a further reduction but increased slow-wave activity. However, maternal simulation of pups (e.g., grooming and milk ejection) consistently produced rapid, transient cortical desynchrony. The magnitude of these maternal effects decreased with age. Finally, systemic blockade of noradrenergic beta receptors led to reduced maternal regulation of infant cortical activity. Our results demonstrate that during early development, mother-infant interactions can immediately affect infant brain activity, in part via a noradrenergic mechanism, suggesting a powerful influence of the maternal behavior and presence on circuit development.

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  1. [16]Nakamura S Kimura F Sakaguchi T Postnatal development of electrical activity in the locus ceruleus. J Neurophysiol 1987 58 510 524 3655880
  2. [19]Feldman DE The spike-timing dependence of plasticity. Neuron 2012 75 556 571 22920249 PMC3431193
  3. [20]Jutras MJ Buffalo EA Synchronous neural activity and memory formation. Curr. Opin. Neurobiol 2010 20 150 155 20303255 PMC2862842
  4. [36]Sullivan RM Wilson DA Leon M Norepinephrine and learning-induced plasticity in infant rat olfactory system. J Neurosci 1989 9 3998 4006 2585063 PMC1885972
  5. [38]Nakamura S Sakaguchi T Development and plasticity of the locus coeruleus: a review of recent physiological and pharmacological experimentation. Prog. Neurobiol 1990 34 505 526 2202018

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Authors
Sarro, E. C., Wilson, D. A., & Sullivan, R. M.
Affiliations
Nathan Kline Institute for Psychiatric Research (US)
Corresponding author
Sarro, Emma C.
Venue
Current Biology
Publisher
Elsevier BV
Published
2014-07
Volume
24
Issue
14
Pages
1664-1669
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2062592498
Cited by
61
References
50
Citations by year
2026: 6 · 2025: 2 · 2024: 5 · 2023: 3 · 2022: 4 · 2021: 5 · 2020: 6 · 2019: 3 · 2018: 5 · 2017: 6 · 2016: 7 · 2015: 8 · 2014: 1
FWCI
4.09
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Mental Health (R01MH091451)
  • National Institute on Deafness and Other Communication Disorders (R01DC009910)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
Keywords
maternal behavior, infant brain development, local field potentials, mother-infant interaction, nest environment, slow-wave activity, neuroplasticity, postnatal development, infant rats, neurodevelopmental disorders
MeSH terms
Animals, Animals, Newborn, Brain, Feeding Behavior, Grooming, Maternal Behavior, Nervous System Physiological Phenomena, Neural Pathways, Neuronal Plasticity, Rats, Brain Waves, Adrenergic Neurons

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