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  Theta resynchronization during reconsolidation of remote contextual fear memory

Narayanan, R., Seidenbecher, T., Sangha, S., Stork, O., & Pape, H. (2007). Theta resynchronization during reconsolidation of remote contextual fear memory. NeuroReport, 18(11), 1107-1111. doi:10.1097/WNR.0b013e3282004992.

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Narayanan, RT1, Author              
Seidenbecher, T, Author
Sangha , S, Author
Stork, O, Author
Pape, HC, Author
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1External Organizations, ou_persistent22              

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 Abstract: We have recently demonstrated high theta-phase synchronization between the lateral amygdala and CA1 area of the hippocampus during retrieval of long-term (1 day) fear memory, and not during short-term (2 h) or remote memory retrieval (30 days). These results indicated that the amygdalo-hippocampal interaction reflects a dynamic change of ensemble activities related to various stages of fear memory storage. In this study, we investigated theta activity during the reconsolidation of a remote contextual fear memory by re-exposing animals to the shock context 30 days after training. Consistent with our previous results, high theta synchronization was no longer apparent during re-exposure to the shock context, but was significantly higher 1 day after context re-exposure. These data indicate that the reconsolidation of remote contextual fear memory includes changes in ensemble activities between the lateral amygdala and CA1.

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 Dates: 2007-07
 Publication Status: Published in print
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 Identifiers: DOI: 10.1097/WNR.0b013e3282004992
BibTex Citekey: NarayananSSSP2007
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Title: NeuroReport
Source Genre: Journal
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Publ. Info: Oxford, UK : Rapid Communications of Oxford Ltd.
Pages: - Volume / Issue: 18 (11) Sequence Number: - Start / End Page: 1107 - 1111 Identifier: ISSN: 0959-4965
CoNE: https://pure.mpg.de/cone/journals/resource/954925578070