Mechanism of altered synaptic strength due to experience: relation to long-term potentiation.

Abstract:

:An increase in medial perforant synaptic strength can be observed for hippocampal slices from rats exposed to environmental enrichment. The expression of enhanced synaptic strength exhibits properties similar to long-term potentiation (LTP), a physiological model of memory storage. Similarities include an increase in strength of the synaptic response in the absence of an altered paired-pulse ratio and an increase in the binding of the glutamate agonist alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate. Furthermore, environmental enrichment interacts with the mechanisms responsible for the induction of LTP by inhibiting further increases in synaptic strength following LTP-inducing stimulation. The results provide evidence for experience-mediated influences on postsynaptic mechanisms regulating medial perforant path synaptic strength.

journal_name

Brain Res

journal_title

Brain research

authors

Foster TC,Gagne J,Massicotte G

doi

10.1016/0006-8993(96)00707-x

subject

Has Abstract

pub_date

1996-10-14 00:00:00

pages

243-50

issue

1-2

eissn

0006-8993

issn

1872-6240

pii

0006-8993(96)00707-X

journal_volume

736

pub_type

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