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Related Experiment Videos

Effect of continuous vibration on nociceptive flexor reflexes.

C Ertekin, D Akçali

    Journal of Neurology, Neurosurgery, and Psychiatry
    |June 1, 1978
    PubMed
    Summary

    Continuous segmental vibration applied to the foot skin significantly amplified biceps femoris (BF) nociceptive reflexes. This facilitation persisted long after vibration ceased, challenging existing theories.

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    Area of Science:

    • Neuroscience
    • Physiology
    • Pain Research

    Background:

    • Nociceptive flexor reflexes are crucial for protective responses to painful stimuli.
    • Understanding modulatory effects on these reflexes is key to pain management strategies.

    Purpose of the Study:

    • To investigate the impact of continuous segmental vibration on biceps femoris (BF) nociceptive flexor reflexes.
    • To determine if vibration influences pain perception and reflex amplitude.

    Main Methods:

    • 25 healthy subjects received painful electrical stimulation of the sural nerve.
    • Continuous segmental vibration (100 Hz) was applied to ipsilateral or contralateral foot skin.
    • Biceps femoris (BF) flexor reflex amplitude and pain sensation were recorded.

    Main Results:

    • Vibration significantly increased the amplitude of nociceptive BF flexor reflexes.
    • This reflex facilitation persisted for at least 20 minutes post-vibration.
    • Pain sensation intensity did not change significantly, though pain radiation decreased.

    Conclusions:

    • Continuous segmental vibration can markedly facilitate nociceptive reflexes.
    • The observed effects suggest novel mechanisms beyond current reflex sensitization or gate control theories.
    • Vibration may offer a potential non-pharmacological method for modulating spinal reflexes.

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