There are many ways that can help categorize the sleep quality people have and now you can add another way to do that using brain waves. It seems that some scientists have pinpointed to alpha waves to do the trick, something that emanates from the back of the head of an individual.
Scientists used to think that the wave was subdued and disappeared as a person fell deeper and deeper into sleep. Alpha wave activity may be the brain’s way of keeping people aware of their surroun









