Critical behavior in the artificial axon

  title={Critical behavior in the artificial axon},
  author={Ziqi Pi and Giovanni Zocchi},
  journal={Journal of Physics Communications},
  • Ziqi Pi, G. Zocchi
  • Published 1 December 2020
  • Biology, Computer Science
  • Journal of Physics Communications
The Artificial Axon is a unique synthetic system, based on biomolecular components, which supports action potentials. Here we examine, experimentally and theoretically, the properties of the threshold for firing in this system. As in real neurons, this threshold corresponds to the critical point of a saddle-node bifurcation. We measure the delay time for firing as a function of the distance to threshold, recovering the expected scaling exponent of −1/2. We introduce a minimal model of the…