scholarly journals Phase-coupled EEG sources predict motor cortex excitability probed with TMS

2021 ◽  
Vol 14 (6) ◽  
pp. 1597
Author(s):  
Maria Ermolova ◽  
Johanna Metsomaa ◽  
Christoph Zrenner ◽  
Paolo Belardinelli ◽  
Ulf Ziemann
Keyword(s):  
Motor Cortex ◽  
Motor Cortex Excitability

scholarly journals Effect of opposing needling on motor cortex excitability in healthy participants and in patients with post-stroke hemiplegia: study protocol for a single-blind, randomised controlled trial

Trials ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Mindong Xu ◽  
Yinyu Zi ◽  
Jianlu Wu ◽  
Nenggui Xu ◽  
Liming Lu ◽  
...  
Keyword(s):  
Motor Cortex ◽  
Primary Motor Cortex ◽  
Motor Evoked Potentials ◽  
Controlled Trial ◽  
Secondary Outcome ◽  
Post Stroke ◽  
Motor Cortex Excitability ◽  
Opposing Needling ◽  
Single Blind ◽  
Healthy Participants

Abstract Background Opposing needling has an obvious curative effect in the treatment of post-stroke hemiplegia; however, the mechanism of the opposing needling in the treatment of post-stroke hemiplegia is still not clear. The purpose of this study is to investigate the effect of opposing needling on the excitability of primary motor cortex (M1) of healthy participants and patients with post-stroke hemiplegia, which may provide insight into the mechanisms of opposing needling in treating post-stroke hemiplegia. Methods This will be a single-blind, randomised, sham-controlled trial in which 80 healthy participants and 40 patients with post-stroke hemiplegia will be recruited. Healthy participants will be randomised 1:1:1:1 to the 2-Hz, 50-Hz, 100-Hz, and sham electroacupuncture groups. Patients with post-stroke hemiplegia will be randomised 1:1 to the opposing needling or conventional treatment groups. The M1 will be located in all groups by using neuroimaging-based navigation. The stimulator coil of transcranial magnetic stimulation (TMS) will be moved over the left and right M1 in order to identify the TMS hotspot, followed by a recording of resting motor thresholds (RMTs) and motor-evoked potentials (MEPs) of the thenar muscles induced by TMS before and after the intervention. The primary outcome measure will be the percent change in the RMTs of the thenar muscles at baseline and after the intervention. The secondary outcome measures will be the amplitude (μV) and latency (ms) of the MEPs of the thenar muscles at baseline and after the intervention. Discussion The aim of this trial is to explore the effect of opposing needling on the excitability of M1 of healthy participants and patients with post-stroke hemiplegia. Trial registration Chinese Clinical Trial Registry ChiCTR1900028138. Registered on 13 December 2019.

scholarly journals Transcranial Magnetic Stimulation as a Tool to Investigate Motor Cortex Excitability in Sport

2021 ◽  
Vol 11 (4) ◽  
pp. 432
Author(s):  
Fiorenzo Moscatelli ◽  
Antonietta Messina ◽  
Anna Valenzano ◽  
Vincenzo Monda ◽  
Monica Salerno ◽  
...  
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Magnetic Stimulation ◽  
Motor Coordination ◽  
Cortical Excitability ◽  
Non Invasive ◽  
Motor Cortex Excitability ◽  
Invasive Method ◽  
And Control ◽  
The Impact

Transcranial magnetic stimulation, since its introduction in 1985, has brought important innovations to the study of cortical excitability as it is a non-invasive method and, therefore, can be used both in healthy and sick subjects. Since the introduction of this cortical stimulation technique, it has been possible to deepen the neurophysiological aspects of motor activation and control. In this narrative review, we want to provide a brief overview regarding TMS as a tool to investigate changes in cortex excitability in athletes and highlight how this tool can be used to investigate the acute and chronic responses of the motor cortex in sport science. The parameters that could be used for the evaluation of cortical excitability and the relative relationship with motor coordination and muscle fatigue, will be also analyzed. Repetitive physical training is generally considered as a principal strategy for acquiring a motor skill, and this process can elicit cortical motor representational changes referred to as use-dependent plasticity. In training settings, physical practice combined with the observation of target movements can enhance cortical excitability and facilitate the process of learning. The data to date suggest that TMS is a valid technique to investigate the changes in motor cortex excitability in trained and untrained subjects. Recently, interest in the possible ergogenic effect of non-invasive brain stimulation in sport is growing and therefore in the future it could be useful to conduct new experiments to evaluate the impact on learning and motor performance of these techniques.

Effects of psychological pressure on motor cortex excitability and EMG activity in a choice reaction task

2011 ◽  
Vol 71 ◽  
pp. e242-e243
Author(s):  
Yoshifumi Tanaka ◽  
Kozo Funase ◽  
Hiroshi Sekiya ◽  
Joyo Sasaki ◽  
Yufu M. Tanaka
Keyword(s):  
Motor Cortex ◽  
Emg Activity ◽  
Choice Reaction Task ◽  
Motor Cortex Excitability ◽  
Psychological Pressure ◽  
Reaction Task

113. Short-term effect of different tdcs intensities on motor cortex excitability

2015 ◽  
Vol 126 (1) ◽  
pp. e26 ◽  
Author(s):  
R. Chieffo ◽  
M. Ciocca ◽  
L. Leocani ◽  
P.C. Miranda ◽  
J. Rothwell
Keyword(s):  
Motor Cortex ◽  
Term Effect ◽  
Short Term ◽  
Short Term Effect ◽  
Motor Cortex Excitability

P025 Minocycline has acute inhibitory effects on human motor cortex excitability

2008 ◽  
Vol 119 ◽  
pp. S77
Author(s):  
Nicolas Lang ◽  
Daniella Terney ◽  
Holger Rothkegel ◽  
Andrea Antal ◽  
Walter Paulus
Keyword(s):  
Motor Cortex ◽  
Inhibitory Effects ◽  
Human Motor Cortex ◽  
Motor Cortex Excitability ◽  
Human Motor
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