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The integrate-and-fire and piecewise-linear (PL) (or FitzHugh-Nagumo) neuron models, which have been used in the study of synchronization phenomena, were often regarded to be quite different types. Periodically and spontaneously firings of such analytical tractable models are dynamically different from or similar to the physiological relevant neuron models. A qualitatively new relationship between the different types of the neuron models is proposed to introduce a coupling-dependence in the PL models according to whether the coupling term is added to the $x$- or $y$-dynamics. Next, with a…mehr

Produktbeschreibung
The integrate-and-fire and piecewise-linear (PL) (or
FitzHugh-Nagumo) neuron models, which have been
used in the study of synchronization phenomena, were
often regarded to be quite different types.
Periodically and spontaneously firings of such
analytical tractable models are dynamically different
from or similar to the physiological relevant
neuron models. A qualitatively new relationship
between the different types of the neuron models is
proposed to introduce a coupling-dependence in the PL
models according to whether the coupling term is
added to the $x$- or $y$-dynamics. Next, with a
return map analysis and a phase reduction method,
synchronization behavior of two neurons with
excitatory or inhibitory synaptic coupling, including
some irregularly synchronous behavior that has never
been reported thus far, can be systematically
explored in terms of three parameters in the model
(synaptic strength, decaying relaxation rate of the
synaptic coupling and exponentially-decaying
relaxation rate during the firing). We then show that
the duration time of an impulse plays an important
role in synchronization phenomena.
Autorenporträt
Dr. Yasuomi D. Sato graduates in physics at Saitama University
and then got his doctorate of science at Tokyo Institute of
Technology in Japan, 2005. He is a Junior Fellow at the Frankfurt
Institute for Advanced Studies (FIAS) in Germany, engaging in the
Europa Union Project "Daisy" and the "Bernstein Focus:
Neurotechnology".