Add Yahoo as a preferred source to see more of our stories on Google. Photo by Nanshu Lu/HealthDay News Folks soon might have their brain activity scanned using a temporary tattoo, a new study ...

Scientists say that they have formulated a way to help people in stressful and demanding work environments track their brainwaves and brain usage — an electronic tattoo device, or "e-tattoo," on the ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Had a tough day? Soon you'll be able to prove it as researchers have ...