Cited by 44Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsNeural dynamics and brain function

Drinking after water deprivation prolongs “unsaturated” LTP in the dentate gyrus of rats

Seidenbecher, Thomas, Balschun, Detlef, Reymann, Klaus G.·1995·Physiology & Behavior

Abstract

The role of different behavioral states was tested with respect to induction and duration of long-term potentiation (LTP), using strong or weak tetanic stimuli of the perforant path input to the dentate gyrus of freely moving male Wistar rats. Recording and stimulating electrodes were chronically implanted into the granule cell layer of dentate gyrus and the perforant path, respectively. The effect of tetanic stimulation during three different behavioral states was compared: (a) highly motivated drinking (HMD): Animals (water deprived before experiment 23 h per day on four consecutive days) were tetanized during drinking; (b) high motivation (HM): Animals were treated as the HMD group but received water 1 h after tetanization; and (c) nondeprived controls (NDC). A strong tetanization (10 bursts, 200 Hz) produced a "saturated" LTP for more than 24 h, which was not affected by the behavioral state. LTP induced by weak tetanization (3 bursts, 200 Hz), which usually declines to baseline after at most 7 h, was clearly prolonged by HMD (persisting for at least 24 h), but facilitated to a lesser extent by HM. We suggest that a psychological component that arises during drinking after water deprivation triggers mechanisms resulting in an overt strengthening of an "unsaturated" LTP after weak tetanization, but without having any effect on a "saturated" LTP induced by strong tetanization.

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Crossref · 10.1016/0031-9384(94)00352-6

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Authors
Seidenbecher, T., Balschun, D., & Reymann, K. G.
Affiliations
Leibniz Institute for Neurobiology (DE)
Corresponding author
Seidenbecher, Thomas
Venue
Physiology & Behavior
Publisher
Elsevier BV
Published
1995-05
Volume
57
Issue
5
Pages
1001-1004
ISSN
0031-9384 (ISSN-L)
OpenAlex
W2063342545
Cited by
44
References
30
Citations by year
2024: 1 · 2022: 2 · 2021: 1 · 2018: 3 · 2017: 2 · 2016: 1 · 2014: 3 · 2013: 1
FWCI
0.40
Type
journal article
Language
en
Open access
closed
Locations
  • Physiology & Behavior (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
long-term potentiation, water deprivation, drinking motives, behavioral state, dentate gyrus, perforant path, tetanic stimulation, granule cells, hippocampus, synaptic plasticity
MeSH terms
Animals, Association Learning, Drinking, Electric Stimulation, Hippocampus, Male, Motivation, Thirst, Water Deprivation, Water-Electrolyte Balance, Rats, Wistar, Long-Term Potentiation, Rats

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