Figure 5. Sympathetic responses evoked by photostimulation of ChR2-transfected A5 area neurons.

A, response evoked by 20 ms light pulses (at arrow) delivered every 5 s. SND was rectified, smoothed (1 ms time constant) and event-averaged using the onset of the light pulse as trigger (100 sweeps). The baseline was set at 100 arbitrary units for both nerves.