scholarly journals Different Effects of Implicit and Explicit Motor Sequence Learning on Latency of Motor Evoked Potential Evoked by Transcranial Magnetic Stimulation on the Primary Motor Cortex

2017 ◽  
Vol 10 ◽  
Author(s):  
Masato Hirano ◽  
Shinji Kubota ◽  
Yoshiki Koizume ◽  
Shinya Tanaka ◽  
Kozo Funase
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Sequence Learning ◽  
Magnetic Stimulation ◽  
Evoked Potential ◽  
Primary Motor Cortex ◽  
Motor Evoked Potential ◽  
Motor Sequence Learning ◽  
Motor Sequence ◽  
Implicit And Explicit

scholarly journals Static magnetic stimulation of the primary motor cortex impairs online but not offline motor sequence learning

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Angélina Lacroix ◽  
Léa Proulx-Bégin ◽  
Raphaël Hamel ◽  
Louis De Beaumont ◽  
Pierre-Michel Bernier ◽  
...  
Keyword(s):  
Motor Cortex ◽  
Sequence Learning ◽  
Magnetic Stimulation ◽  
Primary Motor Cortex ◽  
Motor Sequence Learning ◽  
Motor Sequence ◽  
Stimulation Of

scholarly journals Neuroplasticity Changes on Human Motor Cortex Induced by Acupuncture Therapy: A Preliminary Study

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Yi Yang ◽  
Ines Eisner ◽  
Siqi Chen ◽  
Shaosong Wang ◽  
Fan Zhang ◽  
...  
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Acupuncture Therapy ◽  
Motor Cortex ◽  
Magnetic Stimulation ◽  
Primary Motor Cortex ◽  
Motor Evoked Potential ◽  
Interhemispheric Inhibition ◽  
Human Motor Cortex ◽  
Interhemispheric Competition ◽  
Resting Motor Threshold

While neuroplasticity changes measured by transcranial magnetic stimulation have been proved to be highly correlated to motor recovery and have been tested in various forms of interventions, it has not been applied to investigate the neurophysiologic mechanism of acupuncture therapy. The aim of this study is to investigate neuroplasticity changes induced by a single session of acupuncture therapy in healthy adults, regarding the excitability change on bilateral primary motor cortex and interhemispheric inhibition. Ten subjects took a 30-minute acupuncture therapy and the same length relaxing phase in separate days. Transcranial magnetic stimulation measures, including resting motor threshold, amplitudes of motor-evoked potential, and interhemispheric inhibition, were assessed before and 10 minutes after intervention. Acupuncture treatment showed significant changes on potential amplitude from both ipsilateral and contralateral hemispheres to acupuncture compared to baseline. Also, interhemispheric inhibition from the contralateral motor cortex to the opposite showed a significant decline. The results indicated that corticomotoneuronal excitability and interhemispheric competition could be modulated by acupuncture therapy on healthy subjects. The following question about whether these changes will be observed in the same way on stroke patients and whether they correlate with the therapeutic effect on movement need to be answered by following studies. This trial is registered with ISRCTN13074245.

The Contribution of Primary Motor Cortex is Essential for Probabilistic Implicit Sequence Learning: Evidence from Theta Burst Magnetic Stimulation

2010 ◽  
Vol 22 (3) ◽  
pp. 427-436 ◽  
Author(s):  
Leonora Wilkinson ◽  
James T. Teo ◽  
Ignacio Obeso ◽  
John C. Rothwell ◽  
Marjan Jahanshahi
Keyword(s):  
Motor Cortex ◽  
Sequence Learning ◽  
Magnetic Stimulation ◽  
Primary Motor Cortex ◽  
Implicit Sequence Learning ◽  
Motor Sequence ◽  
Learning Sequence ◽  
Human Motor Cortex ◽  
Dorsolateral Prefrontal ◽  
Theta Burst

Theta burst transcranial magnetic stimulation (TBS) is considered to produce plastic changes in human motor cortex. Here, we examined the inhibitory and excitatory effects of TBS on implicit sequence learning using a probabilistic serial reaction time paradigm. We investigated the involvement of several cortical regions associated with implicit sequence learning by examining probabilistic sequence learning in five age- and IQ-matched groups of healthy participants following continuous inhibitory TBS over primary motor cortex (M1); or the supplementary motor area (SMA) or dorsolateral prefrontal cortex (DLPFC) or following intermittent excitatory TBS of M1; or after sham TBS. Relative to sham TBS, probabilistic sequence learning was abolished by inhibitory TBS over M1, demonstrating that this region is critical for implicit motor sequence learning. Sequence learning was not significantly affected by inhibitory TBS over the SMA, DLPFC or excitatory TBS over M1. These results demonstrate that the M1 mediates implicit sequence learning.

Transcranial Magnetic Stimulation Study of Plastic Changes of Human Motor Cortex after Repetitive Simple Muscle Contractions

2002 ◽  
Vol 95 (3) ◽  
pp. 699-705 ◽  
Author(s):  
Shikako Hayashi ◽  
Yoshiteru Hasegawa ◽  
Tatsuya Kasai
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Magnetic Stimulation ◽  
Structural Changes ◽  
Primary Motor Cortex ◽  
Motor Evoked Potentials ◽  
Human Subjects ◽  
Motor Evoked Potential ◽  
Neural Activation ◽  
Human Motor Cortex

Studies of use-dependent changes in neural activation have recently focused on the primary motor cortex. To detect the excitability changes in the primary motor cortex after practice in human subjects, motor-evoked potentials by transcranial magnetic stimulation during motor imagery after just 10 sessions of simple index finger abduction were examined. The present results indicate that width of the output map and amplitudes of motor-evoked potential became progressively larger until practice ended. These flexible short-term modulations of human primary motor cortex seem important and could lead to structural changes in the intracortical networks as the skill becomes more learned and automatic, i.e., ‘adaptation’ as one of the neural mechanisms related to motor learning.

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