> Our attention of an object (such as another human) oscillates from eye to eye.
I thought I understood this at first but with a bit more thought I realised I didn't. You can change the angle between your eyes' directions (i.e. you can cross your eyes rather than them always being totally parallel), so when you focus on single object they are both directly pointing at it simultaneously. Even if your attention is oscillating between them, there's no reason why this would be observable to an outside observer (or camera).
Is it possible you're thinking of looking at someone else's eyes? In that case there are really two objects to look at - the other person's two eyes - so your attention does indeed oscilate in a visible way. But it's not which of your eyes (that you're looking out of) that's varying - it's which of their eyes (that you're looking toward) that's varying.
On a slightly different but related topic, check this out: from Alfred Yarbus, 'Eye movements and vision'. Springer; 2013 Nov 11. p.107
"The drift of the axes of the eyes was first discovered, and on the whole correctly described, by Dodge (1907). He considered that there is no constant point of fixation and suggested the term 'fixation field."
Subsequently, nearly all authors studying eye movements confirmed the presence of drifting movements of the eyes (Glezer and Tsukkerman, 1961)."
I did a bit of work on a project that examined the difference between the way that artists and laymen look at images. For this we used eye trackers. This is where I first saw how restless normal eye movement is. The figures in that chapter and preceding it bear this out.
So... attention drifts from one eye to the other, though one eye is dominant, and defines the 'pan' angle of the other. In addition, generally the eyes scan points within an object rather than look directly at the object as a whole. As someone who teaching drawing (and therefore perhaps analytical looking) this was an 'eye opener'.
I thought I understood this at first but with a bit more thought I realised I didn't. You can change the angle between your eyes' directions (i.e. you can cross your eyes rather than them always being totally parallel), so when you focus on single object they are both directly pointing at it simultaneously. Even if your attention is oscillating between them, there's no reason why this would be observable to an outside observer (or camera).
Is it possible you're thinking of looking at someone else's eyes? In that case there are really two objects to look at - the other person's two eyes - so your attention does indeed oscilate in a visible way. But it's not which of your eyes (that you're looking out of) that's varying - it's which of their eyes (that you're looking toward) that's varying.