The Future is Now #33

bio feedback
Original Caption:

Got a headache?...Relax as Joanna Spilman is doing while watching monitor of a biofeedback machine enabling her to see and hear tension levels in her body. The band around her head picks up the electrical nerve activity on the frontalis muscle (a band-like muscle running across the forehead). Electrical energy is measured with sensitive instruments then "feedback" to the feedback device so the person can see when his frontalis is relaxed or tense. With practice, he or she can learn the "feeling of relaxation" and promote the state at will.

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