Automatically assigned DDC number: 61689

Manually assigned DDC number: 00632

Number of references: 4

Title: Patterns of Functional Damage in Neural Network Models of Associative Memory

Author:

Subject: James A. Reggia Patterns of Functional Damage in Neural Network Models of Associative Memory

Description: Current understanding of the effects of damage on neural networks is rudimentary, even though such understanding could lead to important insights concerning neurological and psychiatric disorders. Motivated by this consideration, we present a simple analytical framework for estimating the functional damage resulting from focal structural lesions to a neural network model. The effects of focal lesions of varying area, shape and number on the retrieval capacities of a spatially-organized associative memory are quantified, leading to specific scaling laws that may be further examined experimentally. It is predicted that multiple focal lesions will impair performance more than a single lesion of the same size, that slit like lesions are more damaging than rounder lesions, and that the same fraction of damage (relative to the total network size) will result in significantly less performance decrease in larger networks. Our study is clinically motivated by the observation that in multi-infar...

Contributor: The Pennsylvania State University CiteSeer Archives

Publisher: unknown

Date: 1995-04-03

Pubyear: 1995

Format: ps

Identifier: http://citeseer.ist.psu.edu/147880.html

Source: http://www.math.tau.ac.il/~ruppin/spat.ps.gz

Language: en

Relation:

Relation:

Relation:

Relation:

Rights: unrestricted

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