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Erschienen in: Journal of Neural Transmission 7/2014

01.07.2014 | Neurology and Preclinical Neurological Studies - Original Article

Deep brain stimulation of the amygdala alleviates fear conditioning-induced alterations in synaptic plasticity in the cortical–amygdala pathway and fear memory

verfasst von: Li Sui, SiJia Huang, BinBin Peng, Jie Ren, FuYing Tian, Yan Wang

Erschienen in: Journal of Neural Transmission | Ausgabe 7/2014

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Abstract

Deep brain stimulation (DBS) of the amygdala has been demonstrated to modulate hyperactivity of the amygdala, which is responsible for the symptoms of post-traumatic stress disorder (PTSD), and thus might be used for the treatment of PTSD. However, the underlying mechanism of DBS of the amygdala in the modulation of the amygdala is unclear. The present study investigated the effects of DBS of the amygdala on synaptic transmission and synaptic plasticity at cortical inputs to the amygdala, which is critical for the formation and storage of auditory fear memories, and fear memories. The results demonstrated that auditory fear conditioning increased single-pulse-evoked field excitatory postsynaptic potentials in the cortical–amygdala pathway. Furthermore, auditory fear conditioning decreased the induction of paired-pulse facilitation and long-term potentiation, two neurophysiological models for studying short-term and long-term synaptic plasticity, respectively, in the cortical–amygdala pathway. In addition, all these auditory fear conditioning-induced changes could be reversed by DBS of the amygdala. DBS of the amygdala also rescued auditory fear conditioning-induced enhancement of long-term retention of fear memory. These findings suggested that DBS of the amygdala alleviating fear conditioning-induced alterations in synaptic plasticity in the cortical–amygdala pathway and fear memory may underlie the neuromodulatory role of DBS of the amygdala in activities of the amygdala.
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Metadaten
Titel
Deep brain stimulation of the amygdala alleviates fear conditioning-induced alterations in synaptic plasticity in the cortical–amygdala pathway and fear memory
verfasst von
Li Sui
SiJia Huang
BinBin Peng
Jie Ren
FuYing Tian
Yan Wang
Publikationsdatum
01.07.2014
Verlag
Springer Vienna
Erschienen in
Journal of Neural Transmission / Ausgabe 7/2014
Print ISSN: 0300-9564
Elektronische ISSN: 1435-1463
DOI
https://doi.org/10.1007/s00702-014-1183-5

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