Quantitative correlation between tetanus-induced decreases in extracellular calcium and LTP.

Abstract:

:Decreases in the extracellular calcium concentration ([Ca2+]o), induced by tetanization of the Schaffer collaterals in rat hippocampal slices, were measured by means of Ca2+-sensitive microelectrodes. The amount of long term potentiation (LTP) of the evoked field potentials, induced by this tetanus, was determined. A positive correlation was found between the amplitude of the tetanus induced decrease in [Ca2+]o and the amount of LTP that was elicited. The N-methyl-D-aspartate (NMDA) receptor antagonist 2-amino-phosphonovalerate decreased both the tetanus-induced decreases in [Ca2+]o and the amount of LTP that was induced. We conclude that the amount of Ca2+ that enters the cell during a tetanus is of major importance in the induction process of LTP.

journal_name

Brain Res

journal_title

Brain research

authors

Melchers BP,Pennartz CM,Wadman WJ,Lopes da Silva FH

doi

10.1016/0006-8993(88)90798-6

subject

Has Abstract

pub_date

1988-06-28 00:00:00

pages

1-10

issue

1-2

eissn

0006-8993

issn

1872-6240

pii

0006-8993(88)90798-6

journal_volume

454

pub_type

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