Enhanced information transmission with signal dependent noise in an array of LIF neurons
1 School of Engineering, University of Warwick, Coventry CV4 7AL, UK
2 School of Life and Health Sciences, University of Aston, Birmingham B4 7ET, UK
Revised: 9 August 2010
Published online: 1 October 2010
Sensory cells usually transmit information to afferent neurons via chemical synapses, in which the level of noise is dependent on an applied stimulus. Taking into account such dependence, we model a sensory system as an array of LIF neurons with a common signal. We show that information transmission is enhanced by a nonzero level of noise. Moreover, we demonstrate a phenomenon similar to suprathreshold stochastic resonance with additive noise. We remark that many properties of information transmission found for the LIF neurons was predicted by us before with simple binary units [Phys. Rev. E 75, 021121 (2007)]. This confirmation of our predictions allows us to point out identical roots of the phenomena found in the simple threshold systems and more complex LIF neurons.
© EDP Sciences, Springer-Verlag, 2010