Andrew Huberman· PhD
you can have these lapses of attention and these lapses of attention are caused by micro sleeps micro sleeps happen when the brain just very briefly it's almost like one of those toy ducks that kind of dips its bill into the water and then sort of comes back up again and dips your brain just drops down and has a quick sample of sleep and micro sleep and we can measure it in your eyelid that your eyelid starts to have what's called a partial closure and it just kind of goes half the way over or it closes fully shut that's a micros sleep even when it's half open your brain is essentially offline it's in a sleep-like state