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Free association transitions in models of cortical latching dynamics

Russo, E.
•
Namboodiri, V. M. K.
•
Treves, A.
•
Kropff, E.
2008
  • journal article

Periodico
NEW JOURNAL OF PHYSICS
Abstract
Potts networks, in certain conditions, hop spontaneously from one discrete attractor state to another, a process we have called latching dynamics. When continuing indefinitely, latching can serve as a model of infinite recursion, which is nontrivial if the matrix of transition probabilities presents a structure, i.e. a rudimentary grammar. We show here, with computer simulations, that latching transitions cluster in a number of distinct classes: effectively random transitions between weakly correlated attractors; structured, history-dependent transitions between attractors with intermediate correlations; and oscillations between pairs of closely overlapping attractors. Each type can be described by a reduced set of equations of motion, which, once numerically integrated, matches simulations results. We propose that the analysis of such equations may offer clues on how to embed meaningful grammatical structures into more realistic models of specific recursive processes.
DOI
10.1088/1367-2630/10/1/015008
WOS
WOS:000253085300006
Archivio
http://hdl.handle.net/20.500.11767/13567
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-45749093771
https://doi.org/10.1088/1367-2630/10/1/015008
Diritti
closed access
Soggetti
  • Neural networks

  • Language

  • Patterns

Scopus© citazioni
22
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
27
Data di acquisizione
Mar 4, 2024
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