So, if surprise causes the human body to freeze for 40 ms, then logically we should be unaware of 40 ms most of the time. If we were always aware of freezing in place whenever an unexpected musical note played or a driver did something weird with their car, we’d freeze being surprised at our own freezing and get into lots of car accidents and be unable to enjoy new music.
I wondered if 40 ms lag was detectable. First I’ll look at sound. I found this and left only the comparisons.