Andrew Huberman· PhD
but there's another measure that we can also use that measure comes back to the deep sleep that we spoke about and particularly the electrical quality of those brain waves so you can have deep sleep and it can be of different qualities electrical qualities you can have deep sleep that is is immensely powerful with huge epic waves or you can have deep sleep that still is classified as deep sleep but it's a little bit more sort of anemic in its quality and you can't really measure that with these sleep trackers we have to use electrodes and then we decompose the electrical brain activity using a fancy equation and that tells us what was the amount of sort of strength of activity what we call electrical power in that deep sleep regiment