| Presentation | 2017-11-09 Cooperation between noise and neural activity in the cortical network model Hisashi Kada, Jun-nosuke Teramae, Isao T. Tokuda, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In cortical networks, spontaneous firing activities characterized by irregulars and asynchronous neuronal firings have been widely observed. Despite numerous theoretical attempts, the mechanism underling the spontaneous firing activity remained unclear. Teramae et al., (2012), has recently proposed a neural network model with lognormally distributed EPSPs (Excitatory Postsynaptic Potentials). It has clarified that coexistence of many weak and few extremely strong EPSPs play an importance role for sustaining the low firing neural activities. Although the model is based on a deterministic nonlinear system, neuronal activities in the cortex are known to be inherently noisy including various stochastic factors. To examine the cooperatively between the lognormal network and stochastic dynamics, this paper introduces Poisson noise as an external input source to the lognormal cortical network. First, we show that a network of lognormally distributed EPSPs requires much lower frequency of noise than that of normally distributed EPSPs to sustain spontaneous firings. Then, simulations with binomial distribution suggest that coexistence of many weak and few extremely strong EPSPs are the keys to realize spontaneous firing activities with low-frequency noise |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cortical networks / Excitatory postsynaptic potentials / Inhibitory postsynaptic potentials / lognormal distribution / Poisson noise |
| Paper # | CCS2017-23 |
| Date of Issue | 2017-11-02 (CCS) |
| Conference Information | |
| Committee | CCS |
|---|---|
| Conference Date | 2017/11/9(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Osaka Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Naoki Wakamiya(Osaka Univ.) |
| Vice Chair | Mikio Hasegawa(Tokyo Univ. of Science) / Makoto Naruse(NICT) |
| Secretary | Mikio Hasegawa(Osaka Univ.) / Makoto Naruse(Tokyo City Univ.) |
| Assistant | Chisa Takano(Hirishima City Univ.) / Takashi Shimada(Univ. of Tokyo) / Tomoya Suzuki(Ibaraki Univ.) / Ryo Takahashi(AUT) |
| Paper Information | |
| Registration To | Technical Committee on Complex Communication Sciences |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Cooperation between noise and neural activity in the cortical network model |
| Sub Title (in English) | |
| Keyword(1) | Cortical networks |
| Keyword(2) | Excitatory postsynaptic potentials |
| Keyword(3) | Inhibitory postsynaptic potentials |
| Keyword(4) | lognormal distribution |
| Keyword(5) | Poisson noise |
| 1st Author's Name | Hisashi Kada |
| 1st Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 2nd Author's Name | Jun-nosuke Teramae |
| 2nd Author's Affiliation | Osaka University(Osaka University) |
| 3rd Author's Name | Isao T. Tokuda |
| 3rd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| Date | 2017-11-09 |
| Paper # | CCS2017-23 |
| Volume (vol) | vol.117 |
| Number (no) | CCS-288 |
| Page | pp.pp.15-19(CCS), |
| #Pages | 5 |
| Date of Issue | 2017-11-02 (CCS) |