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Related Experiment Videos

Spinal myoclonus resembling belly dance

I Kono1, Y Ueda, K Araki

  • 1Department of Neurology and Gerontology, Kyoto Prefectural University of Medicine, Japan.

Movement Disorders : Official Journal of the Movement Disorder Society
|May 1, 1994
PubMed
Summary
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This study describes a new form of spinal reflex myoclonus originating in the abdominal wall. This condition causes involuntary muscle jerks, which can be triggered by stimuli and spread to the paraspinal muscles.

Area of Science:

  • Neurology
  • Clinical Neuroscience

Background:

  • Myoclonus is a neurological disorder characterized by involuntary muscle jerks.
  • Spinal reflex myoclonus is a rare form of myoclonus originating in the spinal cord.

Observation:

  • A 63-year-old man presented with progressive abdominal wall myoclonus.
  • Myoclonus responded to clonazepam, worsening upon discontinuation.
  • Myoclonus became stimulus-sensitive, triggered by tendon taps with consistent latency.
  • Abdominal myoclonus preceded paraspinal muscle jerks and trunk twisting.

Findings:

  • Abdominal myoclonus was segmental and considered of spinal origin.
  • A 150 ms refractory period was observed in the reflex myoclonus.
  • The findings suggest a spino-bulbo-spinal reflex mechanism.

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  • This represents a novel form of spinal reflex myoclonus.

    • Implications:

    • This case expands the understanding of spinal reflex myoclonus.
    • It highlights the potential for complex reflex pathways in the spinal cord.
    • Further research into the pathophysiology of spinal reflex myoclonus is warranted.