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Weitere elektromyographische Untersuchungen an Areflexien (Tabiker und Polyneuritiden)

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Summary

1. During voluntary contraction, a muscle twitch set up by a stimulus over that muscle is followed by a long lasting inhibition of 120 ms (tibialis anterior) in normal persons.

2. To decide if this is a antidromic effect or a true autogenetic inhibition we proved the muscle twitch in patients with severe damage of muscle afferents or dorsal roots: Tabes dorsalis and Polyneuritis. The muscle twitch in these patients did not change the voluntary innervation. There is no inhibition at all.

3. With a stimulus strength sufficient to evoke a good muscle contraction a stimulus directly set up over the peripheral nerve did not show any antidromic inhibition of the voluntary innervation.

4. Without proprioceptive influence the frequence of motoneurones is still quite regular. This regularity is probably due to the intracentral feedback mechanism over the recurrent collaterals and the Renshaw-Interneurones.

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Authors and Affiliations

  1. Aus der Neurologischen Klinik der Universität Würzburg, Germany

    H. -J. Hufschmidt & M. Nadjmi

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  1. H. -J. Hufschmidt
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  2. M. Nadjmi
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Hufschmidt, H.J., Nadjmi, M. Weitere elektromyographische Untersuchungen an Areflexien (Tabiker und Polyneuritiden). Deutsche Zeitschrift für Nervenheilkunde 180, 490–500 (1960). https://doi.org/10.1007/BF01395480

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  • DOI: https://doi.org/10.1007/BF01395480

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