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Hebbian reverberations in emotional memory micro circuits


Johnson, LR and LeDoux, JE and Doyere, V, Hebbian reverberations in emotional memory micro circuits, Frontiers in Neuroscience, 3, (2) pp. 198-205. ISSN 1662-453X (2009) [Refereed Article]

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Copyright Statement

© 2009 Johnson, LeDoux and Doyère. This is an open-access article subject to an exclusive license agreement between the authors and the Frontiers Research Foundation, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.

DOI: doi:10.3389/neuro.01.027.2009


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.

Item Details

Item Type:Refereed Article
Keywords:memory, PTSD, Amygdala
Research Division:Biomedical and Clinical Sciences
Research Group:Neurosciences
Research Field:Cellular nervous system
Objective Division:Health
Objective Group:Public health (excl. specific population health)
Objective Field:Mental health
UTAS Author:Johnson, LR (Associate Professor Luke Johnson)
ID Code:145135
Year Published:2009
Web of Science® Times Cited:24
Deposited By:Psychology
Deposited On:2021-07-02
Last Modified:2021-09-08
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