Dynamic synchronization and chaos in an associative neural network with multiple active memories
-
- Antonino Raffone
- Department of Psychology, University of Sunderland, Sunderland SR6 0DD, United Kingdom
-
- Cees van Leeuwen
- Laboratory for Perceptual Dynamics, RIKEN BSI, 2-1 Hirosawa, Wako-Shi, Saitama 351-0198, Japan
抄録
<jats:p>Associative memory dynamics in neural networks are generally based on attractors. Retrieval based on fixed-point attractors works if only one memory pattern is retrieved at the time, but cannot enable the simultaneous retrieval of more than one pattern. Stable phase-locking of periodic oscillations or limit cycle attractors leads to incorrect feature bindings if the simultaneously retrieved patterns share some of their features. We investigate retrieval dynamics of multiple active patterns in a network of chaotic model neurons. Several memory patterns are kept simultaneously active and separated from each other by a dynamic itinerant synchronization between neurons. Neurons representing shared features alternate their synchronization between patterns, thus multiplexing their binding relationships. Our model includes a mechanism for self-organized readout or decoding of memory pattern coherence in terms of short-term potentiation and short-term depression of synaptic weights.</jats:p>
収録刊行物
-
- Chaos: An Interdisciplinary Journal of Nonlinear Science
-
Chaos: An Interdisciplinary Journal of Nonlinear Science 13 (3), 1090-1104, 2003-09-01
AIP Publishing
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1363670320209780480
-
- NII論文ID
- 30015982591
-
- ISSN
- 10897682
- 10541500
-
- データソース種別
-
- Crossref
- CiNii Articles