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ICONIP
2010

Emergence of Highly Nonrandom Functional Synaptic Connectivity Through STDP

9 years 4 months ago
Emergence of Highly Nonrandom Functional Synaptic Connectivity Through STDP
Abstract. We investigated the network topology organized through spike-timingdependent plasticity (STDP) using pair- and triad-connectivity patterns, considering di erence of excitatory and inhibitory neurons. As a result, we found that inhibitory synaptic strength a ects statistical properties of the network topology organized through STDP more strongly than the bias of the external input rate for the excitatory neurons. In addition, we also found that STDP leads highly nonrandom structure to the neural network. Our analysis from a viewpoint of connectivity pattern transitions reveals that STDP does not uniformly strengthen and depress excitatory synapses in neural networks. Further, we also found that the significance of triad-connectivity patterns after the learning results from the fact that the probability of triad-connectivity-pattern transitions is much higher than that of combinations of pair-connectivity-pattern transitions.
Hideyuki Kato, Tohru Ikeguchi
Added 04 Mar 2011
Updated 04 Mar 2011
Type Journal
Year 2010
Where ICONIP
Authors Hideyuki Kato, Tohru Ikeguchi
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