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Related Experiment Videos

Muscle control in chronic tic disorders

K O'Connor1, D Gareau, F Borgeat

  • 1Fernand-Seguin Research Center, Louis-H. Lafontaine Hospital, Montreal, Canada.

Biofeedback and Self-Regulation
|June 1, 1995
PubMed
Summary
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Biofeedback training helps manage chronic tic disorder by improving muscle control. This intervention led to reduced tic frequency and enhanced muscle activity in affected areas.

Area of Science:

  • Neurology
  • Rehabilitation Medicine
  • Behavioral Science

Background:

  • Chronic tic disorder involves involuntary muscle contractions.
  • Understanding muscle activity in affected individuals is crucial for treatment.
  • Existing treatments may have limitations, necessitating novel approaches.

Purpose of the Study:

  • To investigate the efficacy of biofeedback training in managing chronic tic disorder.
  • To assess changes in electromyography (EMG) activity in tic-affected and nonaffected muscles.
  • To evaluate the impact of biofeedback on tic frequency and muscle control.

Main Methods:

  • Electromyography (EMG) was recorded from nine subjects with chronic tic disorder.
  • Measurements were taken at rest, baseline, and post-biofeedback training.

Related Experiment Videos

  • Subjects underwent 2-4 biofeedback sessions to enhance muscle contraction control.

    • Main Results:

    • All subjects demonstrated unaided discrimination of muscle contraction levels.
    • Five subjects with asymmetrical tics showed lower baseline resting EMG on the affected side.
    • EMG significantly increased in tic-affected muscles post-training, not in nonaffected muscles.
    • Six subjects reported a clinically significant decrease in tic frequency (≥40%).

    Conclusions:

    • Biofeedback training can modify the reflexlike muscle activity characteristic of tics.
    • This approach offers a useful and rapidly acquired method for tic management.
    • Biofeedback training shows promise as an adjunctive therapy for chronic tic disorder.