Yep, and assuming we can sweep our eyes 150 degrees in 300 ms, we get a maximum angular speed. That means that the light source flickers on and off once in (150

Yep, and assuming we can sweep our eyes 150 degrees in 300 ms, we get a maximum angular speed. That means that the light source flickers on and off once in (150/0.3)/10000 = 0.05 degrees. The human eye can resolve at best 0.02 degrees. This confirms the proper order of magnitude. Edit: if you turn your head at the same time, my numbers above are too conservative.