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Human memory formation is accompanied by rhinal-hippocampal coupling and decoupling

Fell J., , Klaver P., , Lehnertz K., , Grunwald T., , Schaller C., , Elger C.E., and Fernández G., (2001) Human memory formation is accompanied by rhinal-hippocampal coupling and decoupling Nature Neuroscience, 4 (12). pp. 1259-1264.

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Abstract

In humans, distinct processes within the hippocampus and rhinal cortex support declarative memory formation. But do these medial temporal lobe (MTL) substructures directly cooperate in encoding new memories? Phase synchronization of gamma-band electroencephalogram (EEG) oscillations (around 40 Hz) is a general mechanism of transiently connecting neural assemblies. We recorded depth-EEG from within the MTL of epilepsy patients performing a memorization task. Successful as opposed to unsuccessful memory formation was accompanied by an initial elevation of rhinal-hippocampal gamma synchronization followed by a later desynchronization, suggesting that effective declarative memory formation is accompanied by a direct and temporarily limited cooperation between both MTL substructures.

Item Type: Article
Authors :
NameEmailORCID
Fell J., UNSPECIFIEDUNSPECIFIED
Klaver P., UNSPECIFIEDUNSPECIFIED
Lehnertz K., UNSPECIFIEDUNSPECIFIED
Grunwald T., UNSPECIFIEDUNSPECIFIED
Schaller C., UNSPECIFIEDUNSPECIFIED
Elger C.E., UNSPECIFIEDUNSPECIFIED
Fernández G., UNSPECIFIEDUNSPECIFIED
Date : 2001
Identification Number : https://doi.org/10.1038/nn759
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 10:41
Last Modified : 17 May 2017 10:41
URI: http://epubs.surrey.ac.uk/id/eprint/828801

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