during flight, a looming stimulus will drive landing behavior. this is mediated by two descending neurons (DNp07 and DNp10). DNp07 only responds to looming stimulus during flight.
here are whole cell recordings during presentation of looming stimulus. pink is during flight, black is during non-flight. the right plot is superimposed.
However, these behavioral state dependent responses depend on octopamine | octopamine gates activity of DNp07