[institut] SCL Seminar: Serhiy Yanchuk, Thursday, 21 September, 14:00

[Igor Franovic]

Dear colleagues,

You are cordially invited to the SCL seminar of the Center for the Study 
of Complex Systems, which will be held on Thursday, 21 September 2017 at 
14:00 in the library reading room “Dr Dragan Popović" of the Institute 
of Physics Belgrade. The talk entitled

                              "Resistance to noise of neuronal networks 
with plasticity"

will be given by Professor Serhiy Yanchuk (Technical University, 
Berlin). Abstract of the talk is provided below.

Intuitively one might expect independent noise to be a powerful tool for 
desynchronizing a population of synchronized neurons. We here show that, 
intriguingly, for oscillatory neural populations with adaptive synaptic 
weights governed by spike timing-dependent plasticity (STDP) the 
opposite is true. We found that the mean synaptic coupling in such 
systems increases dynamically in response to the increase of the noise 
intensity, and there is an optimal noise level, where the amount of 
synaptic coupling gets maximal in a resonance-like manner as found for 
the stochastic or coherence resonances, although the mechanism in our 
case is different. This constitutes a noise-induced self-organization of 
the synaptic connectivity, which effectively counteracts the 
desynchronizing impact of independent noise over a wide range of the 
noise intensity. Given the attempts to counteract neural synchrony 
underlying tinnitus with noisers and maskers, our results may be of 
neurobiological relevance.

Best regards,

Dr Igor Franović

-- 
Assistant Research Professor
Scientific Computing Laboratory
Center for the Study of Complex Systems
Institute of Physics Belgrade, Serbia
Homepage: www.scl.rs/franovic
Phone: +381 11 3713 184
Fax: +381 11 3162190
E-mail: franovic at ipb.ac.rs


Institute of Physics Belgrade
Pregrevica 118, 11080 Belgrade, Serbia
http://www.ipb.ac.rs/