Fig. 7.

Light-induced spiking in the vf-Chrimson-expressing neurons. At indicated frequencies and optostimulation protocol of 40 stimuli each of 3-ms pulse width, at $I=23\mathrm{mW}/{\mathrm{mm}}^2$, at $\lambda =594\mathrm{nm}$, and $g_0=10\mathrm{mS}/{\mathrm{cm}}^2$.