A study of synaptic connection between low threshold afferent fibres in common peroneal nerve and motoneurones in human tibialis anterior.

Experimental Brain Research
Orawan PrasartwuthK S Türker

Abstract

We have induced H-reflex responses in human tibialis anterior motor units and analysed the results using the classical technique, peristimulus time histogram (PSTH), and a new technique, peristimulus frequencygram (PSF). The PSF has recently been shown to be more reliable than the PSTH for indicating the synaptic connections on motoneurones, and therefore we wished to examine the differences between the two analysis methods. Experiments were conducted on eleven healthy subjects (7 males and 4 females) who did not have any known neurological disorder. The subject sat comfortably on a dental chair and the common peroneal nerve was stimulated. In each experiment, about 600 electrical stimuli were applied to the nerve randomly between 1 and 2 s. The recordings were taken with both by surface electromyogram (SEMG) and as single motor unit potentials. We found that, when a stimulus induces an H-reflex, it also generates a period of reduced activity (silent period) and a long latency excitation in the PSTH. However, the PSF records in general do not match the indications of the PSTH records. For example, when the PSTH indicated existence of a silent period immediately following the H-reflex response, the discharge rate of the unit was...Continue Reading

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Citations

Aug 10, 2010·Experimental Brain Research·Mehmet C KahyaKemal S Türker
Jun 30, 2011·Experimental Brain Research·Erdal BinboğaKemal S Türker
Dec 27, 2011·Experimental Brain Research·Maria Piotrkiewicz, Lydia Kudina
Feb 14, 2016·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·R A Guzmán-VenegasO F Araneda
May 23, 2012·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Erdal Binboğa, Kemal S Türker
Oct 25, 2011·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Gabrielle ToddKemal S Türker
Dec 21, 2010·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Nigel C RogaschKemal S Türker
Oct 14, 2011·Journal of Neurophysiology·Stan T Nakanishi, Patrick J Whelan
Sep 27, 2013·Journal of Neurophysiology·Jessica M D'AmicoKemal S Türker
Oct 18, 2013·Journal of Neurophysiology·P UginčiusK S Türker
May 1, 2021·Exercise and Sport Sciences Reviews·Kemal S Türker

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