Writes the publicist for the American Department of HomeLand Security:"Every brain has a soundtrack. Its tempo and tone will vary, depending on mood, frame of mind, and other features of the brain itself. When that soundtrack is recorded and played back -- to an emergency responder, or a firefighter -- it may sharpen their reflexes during a crisis, and calm their nerves afterward."
Robert Burns of DHS' s Science & Technology Directorate is evaluating neurotraining or "Brain Music", using music created in advance from listeners' own brain waves. The concept is to use the frequency, amplitude, and duration of musical sounds to move the brain from an anxious state to a more relaxed state (or vice versa, though Burns is not too keen to write about THAT). Here is a sample brain music track from DHS said by them to trigger an 'alert' feeling.
While Emergency responders and firefighters may benefit by, or at least be obligated to take part in, this sort of brain muzakery, why would it stop there? Prisons may become oases of tranquility, if each inmate has his own personal pacifying music playing at appropriate times.
How long before arrestees must give a 'brainprint" as well as a fingerprint? You may have the right to remain silent, but your brainwaves won't.
