Journal ArticleDOI
The hippocampal memory indexing theory.
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TLDR
It is asserted that the reactivation of the stored hippocampal memory index will serve to also reactivate the associated unique array of neocortical areas and thus will result in a memorial experience.Abstract:
The hippocampal formation (comprising the hippocampus proper, the dentate gyrus, and the subiculum) has been repeatedly implicated in information storage models of the mammalian brain. The precise nature of the hippocampal role in the storage of information has, however, remained elusive. Here it is proposed that the role of the hippocampus is to form and retain an index of neocortical areas activated by experiential events. The hippocampal index, thus, represents those unique cortical regions activated by specific events. The neuronal mechanism underlying the memory index is hypothesized to be long-term potentiation. It is asserted that the reactivation of the stored hippocampal memory index will serve to also reactivate the associated unique array of neocortical areas and thus will result in a memorial experience. This hippocampal reactivation of a neocortical array may also be involved in establishing a cortically based memory trace.read more
Citations
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Journal ArticleDOI
Memory and the hippocampus: A synthesis from findings with rats, monkeys, and humans.
TL;DR: The role of the hippocampus is considered, which is needed temporarily to bind together distributed sites in neocortex that together represent a whole memory.
Journal ArticleDOI
Why there are complementary learning systems in the hippocampus and neocortex: insights from the successes and failures of connectionist models of learning and memory.
TL;DR: The account presented here suggests that memories are first stored via synaptic changes in the hippocampal system, that these changes support reinstatement of recent memories in the neocortex, that neocortical synapses change a little on each reinstatement, and that remote memory is based on accumulated neocorticals changes.
Journal ArticleDOI
Memory--a century of consolidation.
TL;DR: This review examines the progress made over the century in understanding the time-dependent processes that create the authors' lasting memories.
Journal ArticleDOI
Path integration and the neural basis of the 'cognitive map'
Bruce L. McNaughton,Bruce L. McNaughton,Francesco P. Battaglia,Ole Jensen,Edvard I. Moser,May-Britt Moser +5 more
TL;DR: Theoretical studies suggest that the medial entorhinal cortex might perform some of the essential underlying computations by means of a unique, periodic synaptic matrix that could be self-organized in early development through a simple, symmetry-breaking operation.
Journal ArticleDOI
Memory consolidation, retrograde amnesia and the hippocampal complex
Lynn Nadel,Morris Moscovitch +1 more
TL;DR: The hippocampal formation and related structures are involved in certain forms of memory (e.g. autobiographical episodic and spatial memory) for as long as they exist and contribute to the transformation and stabilization of other form of memory stored elsewhere in the brain.
References
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Book
The Hippocampus as a Cognitive Map
John O'Keefe,Lynn Nadel +1 more
TL;DR: The amnesic syndrome is presented as an extension of the theory to humans and the role of operators in the locale system is examined.
Journal ArticleDOI
Loss of recent memory after bilateral hippocampal lesions.
TL;DR: The results of these studies point to the importance of the hippocampal complex for normal memory function in patients who had undergone similar, but less radical, bilateral medial temporallobe resections, and as a warning to others of the risk to memory involved in bilateral surgical lesions of the hippocampusal region.
Book
The Integrative Action of the Nervous System
TL;DR: In this article, the Integrative Action of the Nervous System [1906] Charles S. Sherrington, W.B. Hadden, and W.A. Baly have been discussed.