Accuracy in Pinch Force Control Can Be Altered by Static Magnetic Field Stimulation Over the Primary Motor Cortex

Nakagawa, Kento; Sasaki, Atsushi

doi:10.1111/ner.12912

Cited by 12 publications

(10 citation statements)

References 28 publications

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“…Regarding motor performance, one study showed that the application of tSMS over M1 impaired the accuracy of submaximal ballistic pinch force control during the intervention and up to 5 min after. The intervention was applied in both right and left sides, and no significant differences were shown between these [18].…”

Section: Effects On Behavior/performance In Healthy Subjectsmentioning

confidence: 99%

“…Most of the interventions were performed in areas involving cortical motor processing [4,[11][12][13][14][15][16][17][18][19][20][21][22], applying TMS as a measure of the excitability of the corticospinal system and using an EMG surface electrode in the stimulated target muscle. Other applications that involve somatosensory or visual areas included protocols with electroencephalographic (EEG) recordings measuring brain rhythms [23][24][25][26][27][28].…”

Section: Study Designs For the Application Of Static Magnetic Fieldsmentioning

confidence: 99%

“…Different studies have been performed to assess neuronal activity in the motor, somatosensory, and visual cortex and record changes in the behavior of subjects [4,[11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Furthermore, applications in other structures, such as in spinal cord [30] or in cerebellum [31], have also been studied.…”

Section: Introductionmentioning

confidence: 99%

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Static magnetic stimulation in the central nervous system: a systematic review

et al. 2021

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Objective To systematically review the literature on the use of the transcranial static magnetic stimulation (tSMS) technique in humans and animals, its effects on different areas of the central nervous system (CNS), its influence on neural excitability and on the subject's behavior, and its biological effects and future possibilities. All static magnetic field applications that can be considered to have a physiologically similar effect have been reviewed. Methods We searched studies using key terms in NCBI PubMed, Scopus, PEDro, SciELO, Cochrane, and links to publications (inception to September 2019). Three reviewers independently selected the studies, extracted data, and assessed the methodological quality of the studies using the recommendations described in the Cochrane Handbook for Systematic Reviews of Interventions, PRISMA guidelines. ResultsWe analyzed 27 studies. The reviewed literature suggests that the use of these magnetic fields has an inhibitory effect on different areas of the CNS, such as motor, somatosensory, and visual cortex, cerebellum, and spinal cord. Regarding subject's behavior, the different effects of tSMS appear to be transient and dependent on the stimulated area, such as loss of visual discrimination or improvement of somatosensory perception. In addition, the technique has some therapeutic utility, specifically in pathologies with cortical hyperexcitability. Conclusions These results suggest that tSMS may be a promising tool to modulate cerebral excitability in a safe and non-invasive way. Further investigations could give a better explanation of its precise mechanisms of action and applications.

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Section: Effects On Behavior/performance In Healthy Subjectsmentioning

confidence: 99%

Section: Study Designs For the Application Of Static Magnetic Fieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Static magnetic stimulation in the central nervous system: a systematic review

et al. 2021

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“…In particular, tSMS over the M1 can increase contralateral M1 excitability [19]. In addition, from a behavioral perspective, tSMS over the M1 has been reported to facilitate offline motor learning [21], and to impair pinch force control [22]. Moreover, visual search performance can be modulated with tSMS over the occipital [15] or temporal areas [23], and anticipatory postural control can be impaired with tSMS over the supplementary motor area [24].…”

Section: Introductionmentioning

confidence: 99%

Transient Modulation of Working Memory Performance and Event-Related Potentials by Transcranial Static Magnetic Field Stimulation over the Dorsolateral Prefrontal Cortex

et al. 2021

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Transcranial static magnetic field stimulation (tSMS) can modulate human cortical excitability and behavior. To better understand the neuromodulatory effect of tSMS, this study investigates whether tSMS applied over the left dorsolateral prefrontal cortex (DLPFC) modulates working memory (WM) performance and its associated event-related potentials (ERPs). Thirteen healthy participants received tSMS or sham stimulation over the left DLPFC for 26 min on different days. The participants performed a 2-back version of the n-back task before, during (20 min after the start of stimulation), immediately after, and 15 min after the stimulation. We examine reaction time for correct responses, d-prime reflecting WM performance, and the N2 and P3 components of ERPs. Our results show that there was no effect of tSMS on reaction time. The d-prime was reduced, and the N2 latency was prolonged immediately after tSMS. These findings indicate that tSMS over the left DLPFC affects WM performance and its associated electrophysiological signals, which can be considered an important step toward a greater understanding of tSMS and its use in studies of higher-order cognitive processes.

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“…Furthermore, recent studies revealed changes in cortical activity in brain regions apart from the site of stimulation [7][8][9][10]. With regard to behavioral parameters, tSMS has been demonstrated to impair performance of difficult reaction time task [5], postural adjustment task [11], and force-matching task [12] when it was applied over the occipital cortex, supplementary motor area, and motor cortex, respectively. Moreover, tSMS has an ability to modulate symmetry judgements with the temporal cortex stimulation [13] and to enhance offline learning with the motor cortex stimulation [14], although the enhancement of offline learning by tSMS was not evident in another study [15].…”

Section: Introductionmentioning

confidence: 99%

Null Effect of Transcranial Static Magnetic Field Stimulation over the Dorsolateral Prefrontal Cortex on Behavioral Performance in a Go/NoGo Task

et al. 2021

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The purpose of this pilot study was to investigate whether transcranial static magnetic field stimulation (tSMS), which can modulate cortical excitability, would influence inhibitory control function when applied over the dorsolateral prefrontal cortex (DLPFC). Young healthy adults (n = 8, mean age ± SD = 24.4 ± 4.1, six females) received the following stimulations for 30 min on different days: (1) tSMS over the left DLPFC, (2) tSMS over the right DLPFC, and (3) sham stimulation over either the left or right DLPFC. The participants performed a Go/NoGo task before, immediately after, and 10 min after the stimulation. They were instructed to extend the right wrist in response to target stimuli. We recorded the electromyogram from the right wrist extensor muscles and analyzed erroneous responses (false alarm and missed target detection) and reaction times. As a result, 50% of the participants made erroneous responses, and there were five erroneous responses in total (0.003%). A series of statistical analyses revealed that tSMS did not affect the reaction time. These preliminary findings suggest the possibility that tSMS over the DLPFC is incapable of modulating inhibitory control and/or that the cognitive load imposed in this study was insufficient to detect the effect.

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Accuracy in Pinch Force Control Can Be Altered by Static Magnetic Field Stimulation Over the Primary Motor Cortex

Cited by 12 publications

References 28 publications

Static magnetic stimulation in the central nervous system: a systematic review

Static magnetic stimulation in the central nervous system: a systematic review

Transient Modulation of Working Memory Performance and Event-Related Potentials by Transcranial Static Magnetic Field Stimulation over the Dorsolateral Prefrontal Cortex

Null Effect of Transcranial Static Magnetic Field Stimulation over the Dorsolateral Prefrontal Cortex on Behavioral Performance in a Go/NoGo Task

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