Perhaps the use of the stimulations of acoustics from ancient drum beats to current possible the influence of day/night rhythms to depression is an ancient method of regulating body balance represents a new vision in health care. The revelation that external rhythmic sounds impacts the brain frequencies and mood have been scientifically demonstrated (Maxfield, 2001; Institution of Transpersonal Psychology Dissertations) should not be surprising with the obvious reactions to various music arrangements.
Currently there is a global of search for stimulating the immune system through exposure to 40 hertz, which additional interest in biofeedback circles to understand brain states of Delta, Theta, Alpha, Beta and Gamma stimulation. This is certainly a frontier in modern medicine beyond surgery and chemistry alone.
The use of electricity has shown its use through the invention of the Pacemaker for heart rhythms, as well pain management through STENS stimulation. Light stimulation has been used in regulating depressive features.
Acoustical Medicine