Habituation of the Interlimb Reflex (ILR) Over the Biceps Brachii Muscle After Electrical Stimuli Over the Sural Nerve.

Autor:	Alaid S; Department of Neurology, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany., Emmer A; Department of Neurology, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany., Kornhuber ME; Department of Neurology, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany.
Jazyk:	angličtina
Zdroj:	Frontiers in neuroscience [Front Neurosci] 2019 Oct 23; Vol. 13, pp. 1130. Date of Electronic Publication: 2019 Oct 23 (Print Publication: 2019).
DOI:	10.3389/fnins.2019.01130
Abstrakt:	Up to now relatively little is known about interlimb reflexes (ILR). Especially it is not well known whether ILR may habituate or not to subsequent stimuli. The main aim of the present investigation was to explore the short term habituation behavior of ILR. The electromyogram was recorded over the tonically active biceps brachii (BB) muscle in 11 healthy subjects contralateral and ipsilateral to supramaximum electrical stimuli (9-12 mA) that were delivered at 1.0 and 0.4 Hz over the left sural nerve. In addition, a selective averaging method was used to investigate the influence of preceding stimuli on the ILR. Thus, 30 blocks of 3 subsequent stimuli were used. All 1st ILR of each block were averaged together. Averages were also obtained for 2nd and 3rd ILR. While ILR amplitudes gained significantly both ipsilateral and contralateral to the stimulus ( p < 0.05) after train stimuli as compared with single stimuli, ILR amplitudes showed a significant decrease at 1.0 Hz versus 0.4 Hz stimuli. ILR amplitudes decreased significantly after the 2nd and 3rd stimulus relative to the 1st ( p < 0.05). ILR can be recorded bilaterally remote from the stimulus site. Furthermore, ILR show clear short term habituation behavior. (Copyright © 2019 Alaid, Emmer and Kornhuber.)
Databáze:	MEDLINE
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