Night Watch in One Brain Hemisphere During Sleep In Unfamiliar location
cell.com
cell.com
I know for sure that I've experienced this phenomenon, it's interesting to see that it's probably a vestigial survival trait.
> In summary, the present study has demonstrated that when we are in a novel environment, interhemispheric asymmetry occurs in regional SWA, vigilance, and responsiveness as a night watch to protect ourselves.