Add '520sig' is the fluorescence traces (voltage) for the green fiber AND 'treadmill' which is the velocity from the treadmill (voltage)
The other channels 'fxn_gen' is probably the excitation source 470 and 405 similar to the other experiment, we have the TTL pulses for the optogenetic stimulus and the camera (adding in a follow-up PR as TTL sources)
Fiber photometry from Elena He: