EEG biofeedback method and system for training voluntary control of human EEG activity

  • US 4,928,704 A
  • Filed: 01/31/1989
  • Issued: 05/29/1990
  • Est. Priority Date: 01/31/1989
  • Status: Expired due to Term
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First Claim
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1. A method for training a person to develop useful degrees of voluntary control of personal electroencephalographic (EEG) activity, said method comprising the steps of:

  • (a) placing a plurality of EEG sensors at a plurality of cortical sites on a head of said person;

    (b) placing said person in an environment of controlled light and sound to control the arousal level and the distractibility of the person;

    (c) sensing electric potentials from said plurality of cortical sites to obtain a plurality of channel signals in a plurality of channels;

    (d) individually filtering said channel signals within predefined frequency subbands, each said predefined frequency subband having an abrupt cutoff at a low-frequency skirt, an abrupt cutoff at a high-frequency skirt and near instantaneous propagation for processing in accordance within time constraints limited by natural neurological reactivity to obtain a resultant signal for each said channel;

    (e) processing each said resultant signal to obtain objective data on brain energies as a function of channel; and

    (f) presenting said objective data substantially instantaneously as feedback to said person to indicate to said person personal EEG activity at a said plurality of cortical sites within said predefined frequency spectra in order to facilitate voluntary conscious and unconscious control over said personal EEG activity.

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