EEG Biofeedback: A Critical Evaluation of the Results and Underlying Rationale.
NAVAL HEALTH RESEARCH CENTER SAN DIEGO CALIF
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The fact that the gross frequency content of the EEG can be voluntarily manipulated is not new. Berger 1930 observed that subjects could suppress and enhance the new found alpha or Berger rhythm by opening and closing their eyes. While this may seem trivial compared to the electronic sophistication of EEG biofeedback, there is little evidence to suggest a fundamental difference. After seven years of fairly intensive study, there is no convincing evidence for direct operant control of EEG activity in man, or that enhancement or suppression of any given EEG frequency band per se will result in significant changes in an individuals mental or physical health. In its broadest sense, EEG biofeedback might best be viewed as a teaching machine which can help individuals learn to maintain certain behavioral or mental states consistent with production of a desired EEG pattern. Whether such procedures have a uniquely useful application has yet to be clearly demonstrated. Author
- Anatomy and Physiology