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Human memory formation is accompanied by rhinal?hippocampal coupling and decoupling.
- Source :
-
Nature Neuroscience . Dec2001, Vol. 4 Issue 12, p1259. 6p. - Publication Year :
- 2001
-
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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MEMORY
*NEUROPSYCHOLOGY
*HIPPOCAMPUS (Brain)
*CEREBRAL cortex
Subjects
Details
- Language :
- English
- ISSN :
- 10976256
- Volume :
- 4
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Nature Neuroscience
- Publication Type :
- Academic Journal
- Accession number :
- 8782696
- Full Text :
- https://doi.org/10.1038/nn759