Cited by 55Memory and Neural MechanismsStress Responses and CortisolNeural dynamics and brain function

Chronic stress disrupts neural coherence between cortico-limbic structures

Open access
Oliveira, João Filipe, Dias, Nuno Sérgio, Correia, Mariana, Gama-Pereira, Filipa, Sardinha, Vanessa Morais, Lima, Ana, Oliveira, Ana Filipa, Jacinto, Luís Ricardo +5 more·2013·Frontiers in Neural Circuits

Abstract

Chronic stress impairs cognitive function, namely on tasks that rely on the integrity of cortico-limbic networks. To unravel the functional impact of progressive stress in cortico-limbic networks we measured neural activity and spectral coherences between the ventral hippocampus (vHIP) and the medial prefrontal cortex (mPFC) in rats subjected to short term stress (STS) and chronic unpredictable stress (CUS). CUS exposure consistently disrupted the spectral coherence between both areas for a wide range of frequencies, whereas STS exposure failed to trigger such effect. The chronic stress-induced coherence decrease correlated inversely with the vHIP power spectrum, but not with the mPFC power spectrum, which supports the view that hippocampal dysfunction is the primary event after stress exposure. Importantly, we additionally show that the variations in vHIP-to-mPFC coherence and power spectrum in the vHIP correlated with stress-induced behavioral deficits in a spatial reference memory task. Altogether, these findings result in an innovative readout to measure, and follow, the functional events that underlie the stress-induced reference memory impairments.

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Crossref · 10.3389/fncir.2013.00010

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  • Repeated and chronic stress may tax limbic systems that modulate arousal and approach behaviors, disrupt bottom-up and top-down connections, and potentially facilitate transition from ideation to behavior.

    “Repeated and chronic stress may tax limbic systems that modulate arousal and approach behaviors, disrupt bottom-up and top-down connections, and potentially, facilitate the transition from ideation to behavior (32, 127).”

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Authors
Oliveira, J. F., Dias, N. S., Correia, M., Gama-Pereira, F., Sardinha, V. M., Lima, A., Oliveira, A. F., Jacinto, L. R., Ferreira, D. S., Silva, A. M., Reis, J. S., Cerqueira, J. J., & Sousa, N.
Affiliations
  • University of Minho (PT)
  • Universidade Politécnica do Cávado e do Ave (PT)
Corresponding author
Sousa, Nuno
Venue
Frontiers in Neural Circuits
Published
2013
Volume
7
Pages
10-10
ISSN
1662-5110 (ISSN-L)
OpenAlex
W2103621658
Cited by
55
References
46
Citations by year
2026: 5 · 2025: 1 · 2024: 3 · 2023: 5 · 2022: 5 · 2021: 4 · 2020: 3 · 2019: 4 · 2018: 5 · 2017: 6 · 2016: 6 · 2015: 2 · 2014: 2 · 2013: 4
FWCI
2.55
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Neural Circuits (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • CiencIPCA (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, cc-by-nc-nd)
Funders
  • European Commission (273936)
  • National Science Council
  • Fundação Bial
  • Fundação para a Ciência e a Tecnologia (COMPETE, PTDC/SAU-NSC/118194/2010, PTDC/SAU-ENB/118383/2010, FCOMP-01-0124-FEDER-022674, SFRH/BPD/66151/2009, SFRH/BD/40459/2007, FCOMP-01-0124-FEDER, /2009)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
chronic stress, cortico-limbic network, ventral hippocampus, medial prefrontal cortex, spectral coherence, chronic unpredictable mild stress, short-term stress, spatial reference memory, memory impairment
MeSH terms
Animals, Chronic Disease, Hippocampus, Limbic System, Male, Neural Pathways, Neuronal Plasticity, Stress, Psychological, Rats, Wistar, Prefrontal Cortex, Rats

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