Cited by 293Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchStress Responses and Cortisol

Exposure to Acute Stress Blocks the Induction of Long-Term Potentiation of the Amygdala–Prefrontal Cortex Pathway In Vivo

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Maroun, Mouna, Richter-Levin, Gal·2003·The Journal of Neuroscience

Abstract

In recent years, attention has been given to the interaction between the emotional state of the animal and its ability to learn and remember. Studies into the neural mechanisms underlying these interactions have focused on stress-induced synaptic plasticity impairments in the hippocampus. However, other brain areas, including the amygdala and the prefrontal cortex (PFC), have been implicated in relation to stress-mediated effects on memory. The present study examined whether stress, which impairs hippocampal long-term potentiation (LTP), also affects LTP of the basolateral amygdala (BLA)–PFC pathway in vivo. We first confirmed that the stress protocol we used, i.e., the elevated platform stress, was effective in blocking LTP in the CA1 area of the hippocampus. We then characterized activity and established the ability to induce LTP at the BLA–PFC pathway. Finally, we examined the effects of an exposure to the elevated platform stress on the ability to induce LTP in this pathway. The results indicate that, at the same time when LTP is blocked in the hippocampus, it is also inhibited in the BLA–medial PFC pathway. These results call for a shift from a focused attention on the effects of stress on plasticity in the hippocampus to a system level approach that emphasizes the possible modification of interactions between relevant brain areas after an exposure to a stressful experience.

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Crossref · 10.1523/jneurosci.23-11-04406.2003

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  1. Diamond DM, Park CR, Puls MJ, Rose GM (2001) Differential effects of stress on hippocampal and amygdaloid LTP. In: Neuronal mechanisms of memory formation (Holscher C, ed), pp 379 -403. Cambridge, UK: Cam- bridge UP.

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Authors
Maroun, M., & Richter-Levin, G.
Affiliations
University of Haifa (IL)
Venue
The Journal of Neuroscience
Published
2003-06-01
Volume
23
Issue
11
Pages
4406-4409
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1784991500
Cited by
293
References
43
Citations by year
2025: 4 · 2024: 4 · 2023: 5 · 2022: 5 · 2021: 10 · 2020: 6 · 2019: 8 · 2018: 11 · 2017: 5 · 2016: 12 · 2015: 21 · 2014: 19 · 2013: 19 · 2012: 23
FWCI
8.63
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
acute stress, long-term potentiation, basolateral amygdala, medial prefrontal cortex, stress-induced memory impairment, hippocampal CA1, synaptic plasticity, stress and learning
MeSH terms
Acute Disease, Amygdala, Analysis of Variance, Animals, Behavior, Animal, Electric Stimulation, Hippocampus, Male, Neural Pathways, Neuronal Plasticity, Stress, Physiological, Theta Rhythm, Receptors, N-Methyl-D-Aspartate, Rats, Sprague-Dawley, Prefrontal Cortex, Long-Term Potentiation, Excitatory Postsynaptic Potentials, Rats

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