fig4

Figure 4. (A) Schematic of a rodent navigation task; (B) Training process of the navigation; (C) Device responses under 50 continuous light pulses after the treatment of H₂S (red curve) and H₂O₂ (blue curve) (2 s, 15.17 mW·cm^-2 light pulses); (D) Exploration result with increased training epochs with the assistance of a reward; (E) Synaptic weights matrix after training with the assistance of a reward; (F) Exploration result with increased training epochs without the assistance of a reward; (G) Synaptic weights matrix after training without the assistance of a reward. H₂S: Hydrogen sulfide; H₂O₂: hydrogen peroxide; ΔG: ΔConductance.