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    Postsynaptic receptor trafficking underlying a form of associative learning (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-03-05
    Description: To elucidate molecular, cellular, and circuit changes that occur in the brain during learning, we investigated the role of a glutamate receptor subtype in fear conditioning. In this form of learning, animals associate two stimuli, such as a tone and a shock. Here we report that fear conditioning drives AMPA-type glutamate receptors into the synapse of a large fraction of postsynaptic neurons in the lateral amygdala, a brain structure essential for this learning process. Furthermore, memory was reduced if AMPA receptor synaptic incorporation was blocked in as few as 10 to 20% of lateral amygdala neurons. Thus, the encoding of memories in the lateral amygdala is mediated by AMPA receptor trafficking, is widely distributed, and displays little redundancy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rumpel, Simon -- LeDoux, Joseph -- Zador, Anthony -- Malinow, Roberto -- New York, N.Y. -- Science. 2005 Apr 1;308(5718):83-8. Epub 2005 Mar 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15746389" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/cytology/metabolism/*physiology/virology ; Animals ; Association Learning/*physiology ; Conditioning (Psychology) ; Electrophysiology ; Fear ; Female ; Genetic Vectors ; Green Fluorescent Proteins/metabolism ; Long-Term Potentiation ; Male ; Memory/*physiology ; Neural Pathways/physiology ; *Neuronal Plasticity ; Neurons/metabolism/*physiology/virology ; Patch-Clamp Techniques ; Protein Transport ; Rats ; Rats, Sprague-Dawley ; Receptors, AMPA/*metabolism ; Recombinant Fusion Proteins/metabolism ; Simplexvirus/genetics ; Synapses/metabolism/*physiology ; Synaptic Transmission ; Thalamus/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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