Noise filtering strategies in adaptive biochemical signaling networks: Application to E. coli chemotaxis.

@article{Sartori2011NoiseFS,
  title={Noise filtering strategies in adaptive biochemical signaling networks: Application to E. coli chemotaxis.},
  author={Pablo Sartori and Yuhai Tu},
  journal={Journal of statistical physics},
  year={2011},
  volume={142 6},
  pages={1206-1217}
}
Two distinct mechanisms for filtering noise in an input signal are identified in a class of adaptive sensory networks. We find that the high-frequency noise is filtered by the output degradation process through time-averaging; while the low-frequency noise is damped by adaptation through negative feedback. Both filtering processes themselves introduce intrinsic noises, which are found to be unfiltered and can thus amount to a significant internal noise floor even without signaling. These… CONTINUE READING