Home-based transcranial static magnetic field stimulation - concept, development, and clinical applications: IFCN...

Area of Science:

• Neuroscience
• Neuromodulation
• Biophysics

Background:

• Non-invasive brain stimulation (NIBS) techniques like TMS and tDCS are valuable but can be complex and costly.
• Transcranial static magnetic field stimulation (tSMS) has emerged as a simpler, more accessible alternative.
• Despite historical skepticism, recent research validates tSMS's physiological effects on cortical excitability.

Purpose of the Study:

• To introduce and evaluate transcranial static magnetic field stimulation (tSMS) as a novel NIBS technique.
• To highlight the accessibility, simplicity, and safety of tSMS for neuromodulation.
• To discuss the potential applications and limitations of tSMS in research and clinical settings.

Main Methods:

• Utilizes a constant magnetic field, typically from a neodymium magnet, to modulate cortical excitability.
• Does not involve electrical input or cause perceptible sensation.
• Focuses on studies demonstrating physiological effects since 2011.

Main Results:

• tSMS has demonstrated the capacity to transiently reduce cortical excitability in humans.
• The technique is simple, portable, safe, and well-tolerated, suitable for home-based use.
• Modulatory effects are modest and transient, but longer durations may extend them; inhibitory action is noted.

Conclusions:

• tSMS is a low-cost, practical addition to the NIBS toolkit.
• Its simplicity and safety support its use in individualized neuromodulation strategies.
• Ongoing innovations may overcome limitations like limited depth penetration, expanding its therapeutic potential.