Transcranial Static Magnetic Field Stimulation over the Primary Motor Cortex Induces Plastic Changes in Cortical
Hikari Kirimoto1, Hiroyuki Tamaki2, Naufumi Otsuru2
1Department of Sensorimotor Neuroscience, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.
Frontiers in Human Neuroscience
|March 3, 2018
Summary
Transcranial static magnetic field stimulation (tSMS) over the primary motor cortex reduced pain signals. This non-invasive brain stimulation technique shows potential for managing chronic pain.
Area of Science:
- Neuroscience
- Neuromodulation
- Pain Research
Background:
- Non-invasive brain stimulation (NIBS) techniques offer novel therapeutic avenues.
- Transcranial static magnetic field stimulation (tSMS) is an emerging, cost-effective NIBS method.
Purpose of the Study:
- To investigate the modulatory effects of tSMS on cortical processing of pain.
- To assess the impact of tSMS on intra-epidermal electrical stimulation-evoked potentials (IES-EPs).
Main Methods:
- 18 healthy volunteers received tSMS or sham stimulation over primary motor (M1) and somatosensory (S1) cortices for 15 minutes.
- IES-EPs were recorded before, immediately after, and 10 minutes after stimulation.
- Stimulation targeted M1 and S1 areas to evaluate regional effects.
Main Results:
- tSMS applied over M1 significantly reduced IES-EP amplitude immediately post-stimulation.
- No significant changes in IES-EP amplitude were observed after tSMS over S1 or with sham stimulation.
- These findings suggest tSMS over M1 influences cortical nociceptive processing.
Conclusions:
- tSMS over the primary motor cortex demonstrates a capacity to modulate pain-related neural activity.
- While results are from acute experimental pain, tSMS presents potential as an adjunctive therapy for chronic pain management.
- Further research is warranted to explore tSMS efficacy in clinical pain populations.
Keywords:
intra-epidermal electrical stimulationnociceptive processingnon-invasive brain stimulationpaintranscranial static magnetic field stimulationMore Related Videos
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