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Journal Article

Synaptic depression enlarges basin of attraction

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84301

Ide D, Watanabe,  M
Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Matsumoto, N., Ide D, Watanabe, M., & Okada, M. (2005). Synaptic depression enlarges basin of attraction. Neurocomputing, 65-66, 571-577. doi:10.1016/j.neucom.2004.10.053.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-D559-3
Abstract
Neurophysiological experiments show that synapticdepression controls a gain for presynaptic inputs. However, the functional roles of this gain control remain unknown. We propose that one of the functional roles is to enlarge basins of attraction. To verify this, we employ an associative memory model. An activity control is requisite for the stable retrieval of sparse patterns. We investigate a storage capacity and the basins of attraction. Consequently, the basins of attraction are enlarged while the storage capacity does not change. Thus, the synapticdepression might incorporate the activity control mechanism.