Summary

International Symposium on Nonlinear Theory and Its Applications

2016

Session Number:B2L-D

Session:

Number:B2L-D-2

Highly Nonrandom Synaptic Connectivity and Spontaneous Ongoing Fluctuation in Cortical Networks

Jun-Nosuke Teramae,  

pp.-

Publication Date:2016/11/27

Online ISSN:2188-5079

DOI:10.34385/proc.48.B2L-D-2

PDF download (80.2KB)

Summary:
Synaptic connectivity of local cortical circuit is highly nonrandom. Connection strength among neurons in the cortex is not distributed on normally or on the Gaussian distribution. Rather, it is well described with a long-tailed, typically the lognormal distribution. The skewed distribution indispensably contributes to robust generation of spontaneous ongoing fluctuation in cortical circuit, which is now thought as a key feature to realize flexible and high performance stochastic computation in the brain. In this study, introducing recent results of studies about synaptic connections in cortical circuit, we provide a mathematical background of fluctuation generation owing to the lognormal distribution.