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J Neurophysiol. 2005 May;93(5):3012-5. Epub 2004 Dec 22.

Two intra-amygdaloid pathways to the central amygdala exhibit different mechanisms of long-term potentiation.

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1
Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, TX 77555-1031, USA.

Abstract

Synaptic plasticity in the amygdala is thought to underlie aversive or rewarding learning and emotional memories. In this study, different mechanisms were found to underlie synaptic plasticity in lateral (LA) and basolateral (BLA) amygdala pathways to the primary output nucleus of the amygdala, the central amygdala (CeA). Specifically, 1) long-term potentiation (LTP) at the BLA-CeA synapses was independent of inhibition and mediated through N-methyl-d-aspartate receptors (NMDARs) and L-type voltage-gated calcium channels (VGCCs), and 2) LTP in the LA-CeA pathway was gated by inhibition and mediated through VGCCs but not NMDARs.

PMID:
15618080
DOI:
10.1152/jn.00871.2004
[Indexed for MEDLINE]
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