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| Research article summary (published 29 Jun 2003): |
A theory of hippocampal memory based on theta phase precession.
Full Abstract
The neural dynamics of the hippocampal network for memory encoding of novel temporal sequences is proposed based on the theta rhythm modulated firing of place cells called theta phase precession. It is hypothesized that theta phase precession is generated at the entorhinal cortex by phase locking between local field theta oscillation and neural oscillators and that the hippocampal closed network with feedforward and backward projections employ theta phase precession to create selectivity in the associative connections needed for temporal sequence storage. Our analyses and computer experiments reveal that the phase precession generated by phase locking instantaneously endows stable phase relations among neural activities in the successively changing neural population. It is concluded that theta phase precession provides biologically plausible dynamics for the memory encoding of novel temporal sequences as episodic events.
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Author information
Author/s: Yamaguchi, Yoko (Y);
Journal and publication information
Publication Type: Letter
Journal: Biological cybernetics (Biol Cybern), published in Germany. (Language: eng)
Reference: 2003-Jul; vol 89 (issue 1) : pp 1-9
Dates: Created 2003/07/01; Completed 2003/09/04; Revised 2004/11/17;
PMID: 12836028, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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