Hebbian reverberations in emotional memory micro circuits

Johnson, Luke R., LeDoux, Joseph E., & Doyère, Valérie (2009) Hebbian reverberations in emotional memory micro circuits. Frontiers in Neuroscience, 3(2), pp. 198-205.

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The study of memory in most behavioral paradigms, including emotional memory paradigms, has focused on the feed forward components that underlie Hebb’s first postulate, associative synaptic plasticity. Hebb’s second postulate argues that activated ensembles of neurons reverberate in order to provide temporal coordination of different neural signals, and thereby facilitate coincidence detection. Recent evidence from our groups has suggested that the lateral amygdala (LA) contains recurrent microcircuits and that these may reverberate. Additionally this reverberant activity is precisely timed with latencies that would facilitate coincidence detection between cortical and sub cortical afferents to the LA.Thus, recent data at the microcircuit level in the amygdala provide some physiological evidence in support of the second Hebbian postulate.

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ID Code: 67966
Item Type: Journal Article
Refereed: Yes
Keywords: Amygdala, Fear, Ensembles, Network, Recurrent
DOI: 10.3389/neuro.01.027.2009
ISSN: 1662-4548
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NEUROSCIENCES (110900)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
Copyright Owner: Copyright 2009 Johnson, LeDoux and Doyère
Copyright Statement: This document is protected by copyright and was first published by Frontiers. All rights reserved. It is reproduced with permission.
Deposited On: 03 Mar 2014 00:48
Last Modified: 03 Mar 2014 00:50

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