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Transitivity, flexibility, conjunctive representations, and the hippocampus. II. A computational analysis

✍ Scribed by Michael J. Frank; Jerry W. Rudy; Randall C. O'Reilly

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 283 KB
Volume: 13
Category: Article
ISSN: 1050-9631
DOI: 10.1002/hipo.10084

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✦ Synopsis

Abstract

A computational neural network model is presented that explains how the hippocampus can contribute to transitive inference performance observed in rats (Dusek and Eichenbaum, 1997. Proc Natl Acad Sci U S A 94:7109–7114; Van Elzakker et al., 2003. Hippocampus 12:this issue). In contrast to existing theories that emphasize the idea that the hippocampus contributes by flexibly relating previously encoded memories, we find that the hippocampus contributes by altering the elemental associative weights of individual stimulus elements during learning. We use this model to account for a range of existing data and to make a number of distinctive predictions that clearly contrast these two views. Hippocampus 2003;13:341–354. © 2003 Wiley‐Liss, Inc.

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