Stochastic resonance in the LIF models with input or threshold noise.
In this paper, two stochastic versions of the LIF neural model are considered: one with the noise signal applied to the firing threshold, the other having it added to the input current. Then, adopting a discontinuous stepwise noise whose innovations are uncorrelated and gaussian distributed, the behaviours of the two models pertaining to the stochastic resonance (SR) are analysed and compared. Furthermore, it is shown that introducing a suitable time correlation into the noise signal brings us from the first model to the second one.
Barbi
Michele
M
Istituto di Biofisica del, CNR Via G. Moruzzi 1, 56124 Pisa, Italy. barbi@ib.pi.cnr.it
Reale
Lara
L
D008954:Models, Biological; D009474:Neurons / Q000502:physiology*; D013269:Stochastic Processes