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  Local Synaptic Modification Can Lead to Organized Connectivity Patterns in Associative Memory

Palm, G. (1984). Local Synaptic Modification Can Lead to Organized Connectivity Patterns in Associative Memory. In E. Frehland (Ed.), Synergetics - From Microscopic to Macroscopic Order: Proceedings of the International Symposium on Synergetics at Berlin, July 4–8, 1983 (pp. 229-242). Berlin, Germany: Springer.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0006-6734-C Version Permalink: https://hdl.handle.net/21.11116/0000-0006-6735-B
Genre: Conference Paper

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https://link.springer.com/content/pdf/10.1007%2F978-3-642-69540-7_22.pdf (Publisher version)
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 Creators:
Palm, G1, 2, Author           
Affiliations:
1Former Department Structure and Function of Natural Nerve-Net , Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497803              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Without their cerebral cortex people seem to be unable to perform the more interesting types of behavior. On the other hand the cortex is anatomically and electrophysiologically surprisingly uniform. So all the different important capabilities that have been attributed: to different cortical areas seem to be achieved by invoking almost the same machinery. How is this possible?

We propose that the cortex is merely a large memory. The organizing principle of this memory is simple and local: local correlations in cortical activity are stored by enhancing the local connectivity between the active elements. This principle (called Hebb’s law) leads to the long-term storage of “preferred” global activity patterns in the cortex (called cell assemblies). Each of these patterns can be activated by any sufficiently large part of it.

Viewed as a retrieval procedure in a memory, this process is known as self-addressing or as autoassociation in the context of associative memories. As a data storage technique, Hebb’s local rule or the corresponding global mechanism of autoassociation turn out to be indeed efficient, even for the purposes of todays large computer memories. As for the cerebral cortex, there is now experimental evidence for variable synaptic connectivities obeying Hebb’s law.

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 Dates: 1984
 Publication Status: Issued
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 Identifiers: DOI: 10.1007/978-3-642-69540-7_22
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Title: International Symposium on Synergetics
Place of Event: Berlin, Germany
Start-/End Date: 1983-07-04 - 1983-07-08

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Title: Synergetics - From Microscopic to Macroscopic Order: Proceedings of the International Symposium on Synergetics at Berlin, July 4–8, 1983
Source Genre: Proceedings
 Creator(s):
Frehland, E, Editor
Affiliations:
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Publ. Info: Berlin, Germany : Springer
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 229 - 242 Identifier: ISBN: 3-540-13131-0

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Title: Springer Series in Synergetics
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Pages: - Volume / Issue: 22 Sequence Number: - Start / End Page: - Identifier: -