[kiernan]

It sounds very similar to a 'Saccade' [1]. Something your eyes do all the time when waking whenever they move. From your mind's perspective it seems to cut off the old signal from wherever yours eyes were previously facing/absorbing, wipes the slate clean and starts building up mental imagery and models based on the new input feed.

I think this might be getting at what they mean by 'change of scene', but it's probably not possible to prove exactly what's happening since it's subjective.

As an experiment you can do yourself to highlight this effect, go to you bathroom and look into the mirror with your face almost touching it, staring at the point between your eyes.

Try not to move your eyes at all and relax them, even if it feels like they might be moving off-target. Eventually your whole 'view' should subtly change, maybe blur and come into and out of seeming focus as your brain tries to interpret the noisy input it's getting (since nothing should be changing, the only difference in the input is noise) and may refocus your mental imagery/minds eye at showing you what it thinks you're looking at.

[1] https://en.wikipedia.org/wiki/Saccade