The libraryCalm
Consumer EEG headsets
Four contacts, on the forehead and behind the ears, and none over the sites clinical neurofeedback targets.
Who it's forAny man about to spend a few hundred on a headband to check his meditation.
Emergency: call 911.
I am not a doctor. This is not medical advice. This is self-education. Talk to a physician who has your history before you change anything.