Fig. 14.

Effect of the stimulation frequency on spiking fidelity in vf-Chrimson-expressing interneurons. (a) Variation of spiking frequency (singlets) of neurons at $I=10\mathrm{mW}/{\mathrm{mm}}^2$, 0.5 ms pulse width, and $G_{d1}=0.625{\mathrm{ms}}^{-1}$. (b) Variation of multispiking frequency (doublets) of neurons at different combinations of expression level and irradiance at 0.5-ms pulse width.