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Related Experiment Videos

Using Contingent Reinforcement to Augment Muscle Activation After Perinatal Brachial Plexus Injury: A Pilot Study.

S V Duff1, B Sargent2, J J Kutch2

  • 1a Department of Physical Therapy, Crean College of Health and Behavioral Sciences , Chapman University , Irvine , California , USA.

Physical & Occupational Therapy in Pediatrics
|April 21, 2017
PubMed
Summary

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Electromyography-triggered musical video successfully increased muscle activation in children with perinatal brachial plexus injury (PBPI). This reinforcement method shows promise for improving arm function in affected children.

Area of Science:

  • Pediatric Rehabilitation
  • Neurorehabilitation
  • Biomedical Engineering

Background:

  • Perinatal brachial plexus injury (PBPI) can impair motor function in infants.
  • Developing effective, engaging interventions is crucial for rehabilitation.
  • Electromyography (EMG) offers objective measures of muscle activity.

Purpose of the Study:

  • To assess the feasibility of using EMG-triggered musical video feedback to enhance muscle activation in children with PBPI.
  • To explore the relationship between muscle activation and hand preference in this population.

Main Methods:

  • Six infants with PBPI and 13 typically developing (TD) controls participated.
  • Biceps muscle activation was measured using surface EMG during baseline and reinforcement conditions.
Keywords:
Brachial plexus injurycontingent reinforcementelectromyographyinfantsmuscle activation

Related Experiment Videos

  • Reinforcement involved a musical video triggered by EMG activity above a set threshold.

    • Main Results:

    • Children with PBPI showed significant increases in biceps activation during reinforcement.
    • Most participants (all PBPI, most TD) demonstrated increased activation in at least one arm.
    • Lower muscle activation was associated with right-hand preference in the PBPI group.

    Conclusions:

    • Contingent reinforcement via EMG-triggered musical video is a feasible approach to increase muscle activation.
    • Further research is needed to optimize training parameters for improved arm function.