Desynchronization does not contribute to intracortical inhibition and facilitation: a paired-pulse paradigm study combined with TST.

Details

Serval ID
serval:BIB_48B771E4190D
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Desynchronization does not contribute to intracortical inhibition and facilitation: a paired-pulse paradigm study combined with TST.
Journal
Journal of neurophysiology
Author(s)
Caranzano L., Stephan M.A., Herrmann F.R., Benninger D.H.
ISSN
1522-1598 (Electronic)
ISSN-L
0022-3077
Publication state
Published
Issued date
01/03/2017
Peer-reviewed
Oui
Volume
117
Number
3
Pages
1052-1056
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
The paired-pulse (PP) transcranial magnetic stimulation (TMS) paradigms allow the exploration of the motor cortex physiology. The triple stimulation technique (TST) improves conventional TMS by reducing effects of desynchronization of motor neuron discharges allowing a precise evaluation of the corticospinal conduction. The objective of our study was to explore PP TMS paradigms combined with the TST to study whether the desynchronization contributes to these phenomena and whether the combined TMS-TST protocol could improve the consistency of responses. We investigated the PP paradigms of short intracortical inhibition (SICI) with 2 ms interstimulus interval (ISI) and of intracortical facilitation (ICF) with 10 ms ISI in 22 healthy subjects applying either conventional TMS alone or combined with the TST protocol. The results of the PP paradigms combined with the TST of SICI and ICF do not differ from those with conventional TMS. However, combining the PP paradigm with the TST reduces their variability. These results speak against a contribution of the desynchronization of motor neuron discharges to the PP paradigms of SICI and ICF. Combining the PP TMS paradigm with the TST may improve their consistency, but the interindividual variability remains such that it precludes their utility for clinical practice.NEW & NOTEWORTHY Combining the triple stimulation technique with the paired-pulse stimulation paradigm improves the consistency of short intracortical inhibition and facilitation and could be useful in research, but the interindividual variability precludes their utility for clinical practice. Our findings do not suggest that desynchronization of descending discharges following transcranial magnetic stimulation contributes to short intracortical inhibition or intracortical facilitation.

Pubmed
Web of science
Create date
29/12/2016 15:13
Last modification date
20/08/2019 14:55
Usage data