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Comment on “Signal-to-noise ratio gain in neuronal systems”.

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<mark>Journal publication date</mark>21/04/2003
<mark>Journal</mark>Physical Review E
Issue number4
Pages (from-to)043901 (6 pages)
<mark>Original language</mark>English


We discuss the gain in signal-to-noise ratio (SNR) recently reported by Liu et al. [Phys. Rev. E 63, 051912 (2001)] in the Hodgkin-Huxley neuronal model. We show first that the possibility of signal-to-noise ratio enhancements can be checked by consideration of the statistical characteristics of switching between the system states, and we examine how the SNR depends on the shape of a periodic signal. Second, we attempt to verify the SNR gain reported by Liu et al.: based on spectral calculations and analyses of switching statistics, we are unable to find any SNR gain in the Hodgkin-Huxley model.