Summary
The firing rates of pretibial flexor muscle spindles were examined before and during the application of a 0.2% procaine solution to the flexor muscle nerve, the firing rates being increased by tetanic stimulation of either the peripheral end of the cut ventral root or the ipsilateral gastrocnemius nerve. 12 out of 25 α-innervated muscle spindles showed no evidence of an additional γ-innervation, and 8 out of 17 γ-innervated spindles showed no evidence of an additional α-innervation as detected by response to procaine application.
Zusammenfassung
Die durch tetanische Reizung entweder des peripheren Stumpfes einer durchschnittenen Ventralwurzel oder der beiden ipsilateralen Gastrocnemiusäste gesteigerte Entladungsfrequenz prätibialer Flexorenspindeln wurde vor und während 0,2%iger Procainapplikation an den die Flexoren versorgenden Muskelnerven untersucht. Bei 12 von 25 Afferenzen α-innervierter Spindeln ließ sich anhand des Procaineinflusses kein Hinweis auf eine zusätzliche γ-Innervation finden und ebenso bei 8 von 17 γ-innervierten kein Hinweis auf eine zusätzliche α-Innervation.
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Haase, J., Schlegel, H.J. Die fusimotorische Erregung prätibialer Muskelspindeln der Katze während prädilektiver Lokalanaesthesie des Muskelnerven. Pflugers Arch. 302, 206–218 (1968). https://doi.org/10.1007/BF00586726
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DOI: https://doi.org/10.1007/BF00586726