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Organization of the entorhinal—hippocampal system: A review of current anatomical data

Organization of the entorhinal—hippocampal system: A review of current anatomical data Graduate School in Neurosciences Amsterdam, Institute of Neurosciences, Department of Anatomy a n d Embryology, Vrije Universiteit, Amsterdam, T h e Netherlands Although the hippocampal formation must be regarded as lamellar concept, we propose that such channels make use of a critical component of the “medial temporal lobe memory longitudinal slabs of hippocampal tissue, in particular in CA1 system,” there is now convincing evidence that it does not and the subiculum. actually store memories for a long time (Zola-Morgan and ENTORHI NAL-CORTICAL CIRCUITRY Squire, 1990; Squire and Zola-Morgan, 1991). The repository of memory traces most probably is in the domain of the associWithin the entorhinal cortex, a differentiation is made beation cortex. It can thus be inferred that the hippocampal tween the superficial layers (I, 11, and 111) and the deep layers formation needs to have reciprocal connections with these ([IV], V, and VI). The superficial layers I1 and I11 give rise cortical domains. However, the striking feature of the connec- to the major components of the perforant path projection to tivity of the medial temporal lobe is that the hippocampal the hippocampal formation (Nafstad, 1967; Steward, 1976; formation has its major cortical connections with the entorhi- Steward http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Hippocampus Wiley

Organization of the entorhinal—hippocampal system: A review of current anatomical data

Hippocampus , Volume 3 (S1) – Oct 1, 1993

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References (122)

Publisher
Wiley
Copyright
Copyright © 1993 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1050-9631
eISSN
1098-1063
DOI
10.1002/hipo.1993.4500030707
Publisher site
See Article on Publisher Site

Abstract

Graduate School in Neurosciences Amsterdam, Institute of Neurosciences, Department of Anatomy a n d Embryology, Vrije Universiteit, Amsterdam, T h e Netherlands Although the hippocampal formation must be regarded as lamellar concept, we propose that such channels make use of a critical component of the “medial temporal lobe memory longitudinal slabs of hippocampal tissue, in particular in CA1 system,” there is now convincing evidence that it does not and the subiculum. actually store memories for a long time (Zola-Morgan and ENTORHI NAL-CORTICAL CIRCUITRY Squire, 1990; Squire and Zola-Morgan, 1991). The repository of memory traces most probably is in the domain of the associWithin the entorhinal cortex, a differentiation is made beation cortex. It can thus be inferred that the hippocampal tween the superficial layers (I, 11, and 111) and the deep layers formation needs to have reciprocal connections with these ([IV], V, and VI). The superficial layers I1 and I11 give rise cortical domains. However, the striking feature of the connec- to the major components of the perforant path projection to tivity of the medial temporal lobe is that the hippocampal the hippocampal formation (Nafstad, 1967; Steward, 1976; formation has its major cortical connections with the entorhi- Steward

Journal

HippocampusWiley

Published: Oct 1, 1993

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