Sciweavers

Share
ICONIP
2010

Learning Shapes Bifurcations of Neural Dynamics upon External Stimuli

9 years 2 days ago
Learning Shapes Bifurcations of Neural Dynamics upon External Stimuli
Memory is often considered to be embedded into one of the attractors in neural dynamical systems, which provides an appropriate output depending on the initial state specified by an input. However, memory is recalled only under the presence of external inputs. Without such inputs, neural states do not provide such memorized outputs. Hence, each of memories do not necessarily correspond to an attractor of the dynamical system without input and do correspond to an attractor of the dynamics system with input. With this background, we propose that memory recall occurs when the neural activity changes to an appropriate output activity upon the application of an input. We introduce a neural network model that enables learning of such memories. After the learning process is complete, the neural dynamics is shaped so that it changes to the desired target with each input. This change is analyzed as bifurcation in a dynamical system. Conditions on timescales for synaptic plasticity are obtained...
Tomoki Kurikawa, Kunihiko Kaneko
Added 26 Jan 2011
Updated 26 Jan 2011
Type Journal
Year 2010
Where ICONIP
Authors Tomoki Kurikawa, Kunihiko Kaneko
Comments (0)
books