We consider a network of globally coupled neuronal oscillators subject to random
force and investigate numerically dynamic responses to an external periodic driving force.
The order parameter, which measures the overlap between
the configuration of th...
We consider a network of globally coupled neuronal oscillators subject to random
force and investigate numerically dynamic responses to an external periodic driving force.
The order parameter, which measures the overlap between
the configuration of the system and the embedded patterns, is found to
exhibit stochastic resonance behavior, as manifested by the
signal-to-noise ratio (SNR).
The optimal noise level at which the SNR reaches its maximum is found to
depend on the driving frequency.
On the other hand, as the randomness in the driving amplitude is increased,
the system undergoes a transition from a memory-retrieval
state to a mixed-memory one.
The noise effects on the temporal-association state in the absence of an
external periodic driving force are also investigated, revealing a similar
noise-enhanced resonance.