Here's what the pause feels like for me...
The final stroke, unlike the practice/preliminary strokes, accelerates forward from zero velocity to the end of the follow through. The preliminary strokes are not accelerating, and it feels like there is no pause between the backward and forward motions, but I know there is.
On that final backswing, once my brain decides the shot is ready to execute, I do a feel a slight difference when transferring from the backward to forward motion, like a zero point in time where the brain resets everything for execution mode. At this point the stroke has zero velocity, a pause in motion of maybe a few microseconds. Maybe it's too small to be seen or noticed, but I can feel it. And the Digicue Blue captures it every time, proving that a pause does occur.
It's like that analogy (by Patrick I think) of a ball being tossed in the air -- yes, it stops moving (zero velocity) just before it begins to accelerate back down to earth, regardless of whether or not it looks like it stops moving.