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Related Experiment Videos

Weak with laughter.

S Overeem, G J Lammers, J G van Dijk

    Lancet (London, England)
    |September 15, 1999
    PubMed
    Summary
    This summary is machine-generated.

    Laughter significantly reduces H-reflex amplitude, indicating motor inhibition may cause the "weak with laughter" sensation. This finding may explain laughter

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    Area of Science:

    • Neuroscience
    • Physiology

    Background:

    • Laughter is a complex human behavior with poorly understood physiological underpinnings.
    • The subjective experience of feeling

    Discussion:

    • The observed reduction in H-reflex amplitude during laughter suggests a centrally mediated motor inhibition.
    • This motor inhibition could be a key mechanism contributing to the transient muscle weakness experienced during intense laughter.

    Key Insights:

    • Laughter induces a significant decrease in H-reflex amplitude, demonstrating a direct physiological effect on motor pathways.
    • Motor inhibition during laughter provides a potential explanation for the common phenomenon of feeling physically weakened by amusement.

    Outlook:

    • Further research should explore the neural circuits responsible for laughter-induced motor inhibition.
  • Investigating this phenomenon could offer new insights into the pathophysiology of cataplexy and other disorders of motor control.