I have found on the internet devices like the "Brain Tuner" claiming that
they can help in depression and sleeps disorders, and learning ability for
example.
The device works making pass a very small current (of variable frequency)
trough the brain, stimulating different parts or neurotransmitters according
to the frequency used.
I am Electronic and I´m thinking in making a similar device, but first I
want to know your opinion:
Do you think that these devices really work?
Do you think that these devices could be dangerous?
