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Related Experiment Videos

Does postbrachial deafferentation modify the cortical responses to forelimb stimulation?

E Eidelberg, C Rick

    Applied Neurophysiology
    |January 1, 1976
    PubMed
    Summary

    This study investigated the Schiff-Sherrington phenomenon using epidural evoked potentials in macaque monkeys. Researchers found no changes in evoked potentials after spinal cord transection, suggesting this phenomenon was not demonstrated via this method.

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    Area of Science:

    • Neuroscience
    • Spinal Cord Physiology
    • Evoked Potentials

    Background:

    • The Schiff-Sherrington phenomenon is a well-documented reflex characterized by increased extensor muscle tone after spinal transection.
    • Previous studies have explored this phenomenon using various electrophysiological methods.

    Purpose of the Study:

    • To determine if epidural evoked potentials could effectively demonstrate the Schiff-Sherrington phenomenon.
    • To investigate the impact of spinal cord transection on peripheral nerve-evoked potentials in macaque monkeys.

    Main Methods:

    • Epidural evoked potentials were recorded in four macaque monkeys.
    • Stimulation was applied to peripheral nerves before and after a mid-thoracic spinal cord transection.

    Main Results:

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    • No significant changes in evoked potentials from upper extremity stimulation were observed following spinal cord transection.
    • The results did not support the demonstration of the Schiff-Sherrington phenomenon using this electrophysiological approach.

    Conclusions:

    • Epidural evoked potential recordings, under these experimental conditions, did not reveal the Schiff-Sherrington phenomenon.
    • Further research may be needed to explore alternative electrophysiological or methodological approaches to study this spinal reflex.