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Human EEG, behavioral stillness and biofeedback

T Mulholland1

  • 1VA Medical Center, Psychology Service (116B), Bedford, MA 01730, USA.

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|April 1, 1995
PubMed
Summary

The human electroencephalogram (EEG) indicates behavioral movements and cortical activity, but not mental processes. Increased slow EEG waves correlate with stillness, potentially aiding therapeutic interventions.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Psychophysiology

Background:

  • The human electroencephalogram (EEG) is widely studied, but its precise relationship to behavior and mental states requires further clarification.
  • Existing interpretations often link EEG patterns directly to cognitive processes, which may be an oversimplification.

Purpose of the Study:

  • To theoretically synthesize the role of normal human EEG in relation to behavior and cortical function.
  • To differentiate EEG indicators of motor control from indicators of mental processes.
  • To explore the therapeutic implications of EEG states associated with behavioral stillness.

Main Methods:

  • Theoretical synthesis of existing research on EEG, behavior, and cortical activity.
  • Analysis of the relationship between specific EEG rhythms (alpha, mu, sensory-motor rhythm, theta) and neuromuscular processes.

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  • Examination of the functional significance of synchronous EEG rhythms and behavioral stillness.
  • Main Results:

    • The normal human EEG is affirmed as an indicator of behavioral movements and general cortical work, not mental processes.
    • A majority of cortical activity in awake individuals involves the regulation of motor behavior.
    • Abundant synchronous slow waves (alpha, mu, sensory-motor rhythm) signify reduced neuromuscular activity and afferent feedback, associated with behavioral stillness.

    Conclusions:

    • Cortical theta, linked to drowsiness, further reduces neuromuscular processes and muscle tone, decreasing afferent feedback.
    • States of behavioral stillness, characterized by specific EEG patterns, may catalyze beneficial psychological and behavioral changes.
    • These findings suggest a therapeutic context for psychotherapeutic interventions and biofeedback training aimed at increasing synchronous EEG rhythms.