Fig. 4: Chemical regulated spiking of FON.
G-t curves of a FON with different asymmetric solution, A inner: 1 M KCl+100 μM K3Fe(CN)6; outer: 1 M KCl; B inner: 10 mM KCl+1 mM ATP; outer: 10 mM KCl; C inner: 20 mM NaClO4; outer: 10 mM KCl; The applied bias was −3 V. D Typical G-t curves of a FON in asymmetric solution with different ionic strength (inner: 1 mM K3Fe(CN)6 + KCl with different concentration; outer: KCl with different concentration), bias voltage −3 V. E Power spectra derived from (D). F Plot of spiking frequency versus KCl concentration. G Typical G-t curves of a FON in asymmetric solution with different K3Fe(CN)6 concentration (inner: 0.1 M KCl + K3Fe(CN)6 with different concentration; outer: 0.1 M KCl), bias voltage −3 V. H Power spectra derived from (G). I Plot of spiking frequency versus K3Fe(CN)6 concentration.
