That's the coolest Necker cube ever. (http://en.wikipedia.org/wiki/Necker_cube)

But I've never heard of any connection between left/right dominance and this phenomenon ("binocular rivalry"). I suspect it might be BS...

In any case, if you want to learn more, check out this (pdf) slideshow: http://visionlab.harvard.edu/Members/Olivia/tutorialsDemos/B...

This was put together by my friend Olivia, who's done a lot of work in this field. Be sure to check out pg. 16 -- Olivia's studied binocular rivalry not only in meditating monks, but also in people on 'shroom trips. Psychology is FUN! =)