High-Intensity Pulsed Magnetotherapy: High-Intensity Electromagnetic Field and Its Application in Neurology
Neuro(b)log - Neurology explained clearly
Modern neurology and the treatment of spinal pain have long since moved beyond merely prescribing painkillers and recommending bed rest. We live in an era where medicine and medical technology are advancing by leaps and bounds. As a result, through the use of physical therapy methods such as magnetotherapy (not only) for spinal pain, we can work directly with the nervous system and muscles. We achieve this by using technologies that influence neurophysiological processes within tissues and cells. One of the greatest technological breakthroughs in outpatient therapy is high-intensity pulsed magnetotherapy (SIS – Super Inductive System, also referred to as rPMS (Repetitive Peripheral Magnetic Stimulation) or HI-PEMF).
A Brief History in a Nutshell
- 1965 – The Scientific Foundation: Melzack and Wall publish the Gate Control Theory of Pain. They describe how the neural "gates" in the spinal cord can be closed to pain using other sensory inputs.
- 1974 – Classic magnetotherapy (PEMF) is introduced.
- 1979 – The Era of the Classic Magnet (PEMF): The US FDA officially approves weak pulsed electromagnetic field therapy for the treatment of non-union fractures. In the 1980s, the method experiences a massive boom in Czechoslovakia as well.
- 1985 – The Birth of the "Supermagnet" / Transcranial Magnetic Stimulation (TMS): In this year, Anthony Barker in Sheffield, UK, built the first functional high-performance magnetic stimulator. It was originally designed for Transcranial Magnetic Stimulation (TMS) of the brain and began to be applied in the treatment of depression. Based on this technology, the focus shifted in the 1990s toward the stimulation of peripheral nerves and muscles. The method of transcranial magnetic stimulation is still used today in psychiatry, as well as in other fields.
- 1990s – Moving to the Body (rPMS): Physicians focus the application of high-intensity pulsed magnetotherapy on peripheral nerves and muscles.
- After 2010 – High-Tech Revolution (SIS): Thanks to new cooling systems, high-intensity magnets no longer overheat. They become safe and massively popular machines for modern rehabilitation, just as we know them today.
Why Am I Writing About the "Supermagnet" as a Hit if It Was Born Back in 1985?
As inquisitive readers of the Neuro(b)log, you might be asking yourselves: "If scientists discovered rPMS forty years ago, why present it as a modern trend?" You are right. Although the physical principle dates back to the eighties, the journey from neuroscientific laboratories to real clinical application for patients—for instance, in neurological clinics—took decades. Furthermore, before this technology was introduced into practice in the Czech Republic, a vast amount of time passed, as it initially served purely for brain research (like many other devices). Today, only a few dozen top-tier facilities have it available in the Czech Republic. And its other potential medical applications are still being actively researched.
1. Genes from Grandfather TMS: When Psychiatry Helps Neurology
In 1985, Transcranial Magnetic Stimulation (TMS) was born. Neurologists and psychiatrists used it to stimulate the cerebral cortex through the skull, not only to map motor pathways but also to treat severe depression. These devices were massive, expensive, and the coils overheated extremely fast. It took decades for engineers to develop advanced cooling systems (using liquid or air) and software that allowed this immense force—in the range of Tesla—to be safely directed toward the periphery. This is how rPMS (Repetitive Peripheral Magnetic Stimulation) was created. What was once confined to research centers finally became a method for clinical practice.
2. Neurological Bio-Hacking: Fixing the Software, Not the Hardware
Why is rPMS so interesting for neurologists? Classic magnetotherapy from the 1970s (PEMF) acts on the tissue metabolically—it improves cellular blood circulation, which provides excellent support for healing fractures. However, rPMS targets the action potential of the nerve directly.The intense field induces an electrical current within the tissue, which depolarizes the membrane of the nerve fiber. For a patient suffering from spasticity (e.g., after a stroke or in multiple sclerosis), this means we can painlessly stimulate deep structures and mechanoreceptors. The signals from rPMS flood the spinal cord, reset the reflex arcs, and the brain receives a clear command: "Relax this muscle immediately!" It is quite literally a software reboot of overloaded neural pathways.
3. Why Won't You Find rPMS at Every Local Clinic?
Although the neurophysiological effects of rPMS on spasticity, rigidity, and neuropathic pain are scientifically proven, this method remains an exclusive service in the Czech Republic. Acquiring the device (most commonly known under the commercial name SIS – Super Inductive System in clinics) requires an investment of hundreds of thousands to millions of CZK. Moreover, health insurance companies do not universally cover this specialized neuro-modulatory care in contracted outpatient clinics. Therefore, you will mostly encounter rPMS in the Czech Republic at specialized clinical facilities or progressive private neuro-microclinics like Neurologie Mištríková. Nevertheless, this physical treatment method is utilized much more frequently and is far more accessible at foreign facilities in Europe and worldwide than in the Czech Republic.
The Great Comparison: Low vs. High Induction
To understand how revolutionary this method is, we must look at the fundamental difference between the physical therapy methods offered by standard rehabilitation and what modern technology can achieve.The difference between high-intensity and low-intensity magnetic therapy lies not only in the depth of penetration into the tissue but also in its neurophysiological effect.Many patients have already encountered classic low-intensity magnetotherapy (Pulsed Electromagnetic Field Therapy – PEMF) in the past. This works on the principle of applying magnetic mats, rings, or cylinders. Its intensity reaches only units to tens of militesla (mT). From a physical standpoint, these are weak electrical currents; this field acts predominantly on superficial structures, where it supports blood microcirculation and accelerates tissue healing (e.g., after fractures). At the cellular level, it influences the transport of calcium and sodium ions, thereby playing a role in regeneration. It exhibits anti-inflammatory and anti-edematous (anti-swelling) effects. During the application of low-intensity magnetotherapy, the patient feels nothing at all, and to achieve any effect, it is necessary to complete long series of dozens of procedures, each lasting 20–30 minutes. However, its efficacy on acute pain or severe muscle stiffness is very limited.
High-intensity magnetotherapy (HI-PEMF/SIS, High-Intensity Pulsed Electromagnetic Field, Super Inductive System) represents a technological leap forward by several generations:
Up to a hundred times higher output:It operates with an intensity of up to 3 Tesla (T) , which equals 3,000 militesla. The strength of this field is comparable to diagnostic Magnetic Resonance Imaging (MRI), but it is concentrated into the head of the applicator.
Unrivaled penetration depth:While low induction weakens right beneath the skin, the high-intensity field safely and painlessly passes through clothing, skin, and subcutaneous fat. It penetrates deep into muscles, bones, and deeply located nerve plexuses. The non-contact application allows for the depolarization of nerve fibers, and if we target a motor nerve, it triggers a muscle contraction, which is utilized for strengthening or relaxing specific muscles. If we target sensory nerves, we can block the transmission of pain according to the so-called Gate Control Theory of Pain. It acts on thick nerve fibers (A-beta): these transmit information about mechanical touch, pressure, vibrations, or cold. These fibers are faster, and the high-intensity pulsed magnetotherapy causes their rapid activation, which triggers signal transmission to the brain, subsequently reducing the perception of pain. The electromagnetic field enables a change in the potential on the neuronal membrane and supports the release of endorphins.
Immediate stimulation (The patient feels the effect):The enormous intensity of the field can directly trigger action within the nerve and muscle cells. Consequently, during the therapy, the patient perceives distinct, painless muscle contractions (twitches), tingling, and an immediate sensation of relaxation.
Dramatically higher and faster efficacy:Thanks to its ability to directly stimulate nerve fibers, high-intensity magnetotherapy brings relief from pain and spasms significantly faster—noticeable results often appear after just 3 to 5 sessions, rather than months of rehabilitation. A single application lasts 10–20 minutes.
In certain cases, especially with acute back pain, the patient may experience very rapid pain relief and the elimination of muscle tension (spasms). It is also utilized for post-traumatic conditions, bone healing, and musculoskeletal pain, including joint pain.
LOW-INTENSITY MAGNETOTHERAPY (Standard rehab) ──► Intensity in mT ──► Superficial effect ──► Patient feels nothing ──► Dozens of applications required
HIGH-INTENSITY MAGNETOTHERAPY (Neurologie Mištríková) ──► Intensity up to 3 Tesla ──► Deep nerve penetration ──► Clear muscle contraction ──► Faster effect (3–5 sessions)
Which Method to Choose?
- Classic Magnetotherapy: Ideal as a long-term, gentle support for healing tissues and bones after fractures, rheumatic complaints, and chronic swelling where aggressive stimulation is not desirable.
- High-Intensity Magnetotherapy: The first-line choice for acute and severe back pain, muscle stiffness, the need for muscle stimulation (e.g., after injuries or surgeries), or for blocking pain rapidly.
How Does a Magnet "Reprogram" Spasticity and Stiffness?
- High-intensity pulsed magnetotherapy (referred to in scientific literature most frequently as rPMS – Repetitive Peripheral Magnetic Stimulation or SIS – Super Inductive System) reduces spasticity and muscle stiffness through the reorganization of neural pathways (neuromodulation) and the mechanical relaxation of muscle fibers.One of the most critical neurophysiological applications of this high intensity is the treatment of spasticity. Spasticity is a condition where flawed communication occurs between the brain (or spinal cord) and the muscle. This involves a connection known as a reflex arc, which maintains pathological tension. The muscle receives a continuous command to contract, leading to spasms, stiffness, pain, and restricted movement—typically following a stroke, in multiple sclerosis, or after spinal cord injuries.Thanks to high induction, the device can resolve this problem through the following mechanisms:
- Neuromodulation (Resetting the Nerve Signal): The extremely fast and powerful magnetic pulses generated at various frequencies by the device create electrical microcurrents (so-called eddy currents) within the tissue. These stimulate thick sensory nerve fibers, managing to "override" the chaotic electrical signals in the damaged nerves. Imagine it as restarting a frozen computer. The nervous system calms down and stops constantly irritating the muscle into a state of contraction.
- Reciprocal Inhibition (Utilizing the Body's Natural Reflexes): The device can precisely target the weakened muscles that neighbor the damaged, spastic muscle. By targeted stimulation and engagement of these muscles, a reflex command is triggered in the brain: "If one side contracts, the opposite (spastic) side must relax." The result is the immediate relief of the spasm.
- Improving Tissue Elasticity and Microcirculation: In cases of long-term stiffness and spasticity, we frequently see poor blood supply to the muscles and swelling. HI-PEMF induces rhythmic muscle twitches that promote local blood flow, muscle oxygenation, and the mechanical relaxation of stiff myofascial structures.
How Does High-Intensity Magnetotherapy (rPMS/SIS) Treat Spinal Pain?
Back and spinal pain (from cervical to lumbar) are among the most frequent diagnoses encountered by neurologists. They are often caused by a combination of muscle overload (acute blockages), herniated intervertebral discs, and the resulting compression of nerve roots. Treatment involves not only analgesics (painkillers), but rehabilitation centers also frequently use classic magnetotherapy, which does not penetrate deeply enough. In my clinical practice, when compared specifically with classic magnetotherapy, I often observe a very rapid effect in my patients when utilizing high-intensity pulsed magnetotherapy for the treatment of spinal pain.
The principle behind why SIS works is similar to that of spasticity:
Early pain relief is achieved via the previously mentioned "Gate Control Theory." This is because during an acute onset (lumbago) or nerve root compression, information about the pain travels all the way to the brain. By influencing the thick sensory nerve fibers (A-beta), which register information about pressure and vibrations, pain modulation occurs through the so-called closing of the gates, causing acute pain to subside.Furthermore, there is the spasmolytic effect, i.e., the release of tension. When a back hurts, whether due to a disc herniation or another cause, the muscles around the affected area contract to fixate the vertebrae. In extreme cases, a patient walks into the clinic bent forward, unable to straighten up or turn their head; in some instances, the spine is laterally deviated and the patient cannot tolerate extended sitting, for example. The longer this stiffness lasts, the longer the small blood vessels in the soft tissues remain compressed. This leads to insufficient oxygenation, and lactate begins to accumulate in the tissues. This is the exact same substance produced in muscles after intense training, such as running, which causes muscle soreness.High-intensity magnetic pulses induce rhythmic, painless contractions (twitches) within the deep muscle structures along the spine. This mechanically releases the muscles, restores blood flow (microcirculation) within them, and the stiffness subsides immediately.
Another effect is the support of nerve healing and the release of endorphins. If an intervertebral disc compresses a nerve (e.g., pain shoots into the arm or leg), the nerve fiber is not only irritated by the pressure but reactively swells. Targeted eddy currents from the device alter the electrical potential on cell membranes, accelerating metabolism and stimulating the regeneration of damaged peripheral nerves. Additionally, this intense stimulation prompts the body to release endorphins—our own natural happiness hormones and built-in painkillers.
Why Is This a Revolution for Back Pain?
With classic rehabilitations, a patient often waits weeks for an appointment at a time when their symptoms trouble them the most. Thanks to having the device with rPMS/SIS technology at our facility, we enable patients to access this treatment and modern technology much sooner—right when they need it most, during the acute phase of their complaints. High-intensity pulsed magnetotherapy acts directly at the source of the problem deep within the tissue. Significant reduction in back pain and the restoration of mobility typically occur after just 3 to 5 short sessions (the number of applications is tailored individually to each patient). The muscles along the spine relax, stop pressing on the vertebrae, and the patient experiences relief. Treatment is initiated directly at our clinic, Neurologie Mištríková, and you can plynule continue with targeted physical therapy and rehabilitation at another specialized facility.
Main Neurological Indications: Who Does the Therapy Help?
Thanks to its ability to alleviate pain, relax muscles, and support nerve regeneration, the high-intensity field finds application across a wide range of diagnoses:
- Spastic Conditions:
Following strokes, central nervous system traumas, and cerebral palsy (CP).
- Vertebrogenic Syndromes:
Acute and chronic back pain (cervical, thoracic, lumbar spine), herniated intervertebral discs with nerve root compression (radicular syndromes).
- Neuropathies:
Regeneration of damaged peripheral nerves (e.g., carpal tunnel syndrome, polyneuropathy, etc.).
- Acute Blockages:
Severe muscle spasms around the spine.
- Certain Types of Tinnitus:
For instance, cervicogenic tinnitus or tinnitus caused by a temporomandibular joint (TMJ) dysfunction. You can learn more about tinnitus in my article: Ear DJ Tinnitus: Causes, Diagnosis, and Treatment Options.
Comfort and Accessibility of Care
For the patient, the therapy is maximally comfortable and time-efficient. The entire procedure usually takes 10 to 20 minutes. Following the application, the patient has no restrictions that they need to observe.Please note: Due to the strength of the magnetic field, the therapy cannot be undergone by individuals with an implanted pacemaker, defibrillator, or during pregnancy.
At Neurologie Mištríková, we bet on evidence-based medicine and cutting-edge technologies integrated into everyday clinical practice directly for patients. Individually tailored treatment utilizing premium, state-of-the-art diagnostic and therapeutic equipment in one location ranks Neurologie Mištríková among exceptional facilities fulfilling the concept of a neuro-microclinic within the Czech Republic and Europe.
If you are troubled by spasticity, back pain, or nerve damage, I will be glad to consult with you during a clinical examination to determine whether high-intensity magnetotherapy is the right path toward your relief and an improved quality of life.
FAQ
1. What is spasticity and how can high-intensity magnetotherapy affect it?
Under normal circumstances, our muscles work in perfect harmony. When you want to bend your arm, the brain sends a signal for one muscle to contract, while its counterpart (the antagonist) on the other side relaxes. This process is constantly coordinated and modulated by the so-called motoneuron in the spinal cord, which functions as a sort of "voltage regulator."However, when damage occurs to the brain or spinal cord (e.g., after a stroke, in multiple sclerosis, during cerebral palsy, or following spinal cord injuries), this communication pathway is disrupted. The proper function between the spinal cord and the brain is broken.
The result is spasticity:
- The spinal cord sends continuous, uncontrolled commands to the muscle: "Contract! Hold! Do not relax!"
- The muscle enters a state of permanent, painful tension and spasm.
- Over time, the muscle shortens, joints become stiff, and the patient loses the ability to move naturally.
Classic treatment using medications (muscle relaxants) often sedates the entire organism, causing fatigue, dizziness, or other side effects. Meanwhile, standard rehabilitation hits a wall because it cannot penetrate to the very source of the problem—the blocked nerve signal.
2. Principle of Action: How does high-intensity magnetotherapy act on a spastic muscle?
High-intensity pulsed magnetotherapy (with a field intensity of up to 3 Tesla) works by painlessly penetrating deep into the nerve tissue, resolving the neurophysiological short circuit in the body through three key mechanisms:
- 1. Neuromodulation: High-intensity pulsed magnetotherapy generates electrical microcurrents (eddy currents) that stimulate thick sensory nerve fibers, thereby altering the electrical signals transmitted from the damaged nerves.
- 2. Reciprocal Inhibition (Utilizing the body's natural reflexes): If one muscle contracts wildly, the nervous system must automatically inhibit the muscle on the opposite side of the limb. High-intensity magnetotherapy can target exactly those weakened muscles (antagonists) that cannot assert themselves due to the spasm. The device forces them into a strong, rhythmic contraction. By doing so, it sends a clear reflex command to the spinal cord and brain: "The opposite muscle is working, the spastic muscle must relax immediately!"
- 3. Increasing Mechanical Compliance and Cellular Restart: In addition to the electrophysiological effect, the pulses also act mechanically at the cellular level. The rapid alternation of magnetic forces functions as a deep micro-massage. It significantly increases local blood flow (microcirculation) and cellular metabolism in the affected area. Waste products of metabolism (such as lactate), which cause the typical dull pain associated with spasticity, are flushed out of the stiff muscle. The muscle becomes more pliable, making it much easier to exercise with afterward.
3. Can high-intensity pulsed magnetotherapy be combined with rehabilitation?
Yes, and combining it with rehabilitation/physical therapy brings a greater benefit than physical therapy alone or standalone magnetotherapy. High-intensity magnetotherapy cannot miraculously cure the original neurological damage in the brain—for example, after a stroke—but it can reduce muscle tone (tension). Nor can it remove a herniated intervertebral disc. However, it can assist the patient by relieving spasms, reducing pain, and increasing the range of motion.This state of relaxation creates an ideal opportunity for rehabilitation/physical therapy—the muscle, which was previously hard as stone, is suddenly more pliable and ready for the restoration of proper movement patterns.
The modern high-intensity pulsed magnetotherapy Salus Talent A helps alleviate acute and chronic pain and support tissue regeneration. Book an appointment for a painless and comfortable application provided at Neurologie Mištríková in the center of Brno.
⭐ About the Author of Neuro(b)log
I am MUDr. Petra Mištríková, MBA, and I have been dedicating my career to neurology for many years. Throughout my clinical practice, I have gained extensive experience across the entire spectrum of neurological disorders. Today, I run my private clinic, Neurologie Mištríková, in Brno, where I provide comprehensive care for adult patients—ranging from newly emerging acute issues to long-term chronic conditions. In my practice, I combine precise neurological diagnostics (EEG, EMG, and evoked potentials: BAEP, MEP, VEP) with modern physical therapy methods, such as biostimulation laser therapy and 3T high-intensity pulsed magnetotherapy. I utilize advanced pharmacological treatments in alignment with the latest medical guidelines, including the option to prescribe medical cannabis for selected diagnoses.I place a strong emphasis on professional precision, as well as clear communication and a personalized approach. My goal is to ensure that you always fully understand your condition and the available treatment options. I strive to provide you with European-standard neurological care—expert, effective, modern, and compassionate. Thanks to a broad specialization and top-tier equipment in one place, my practice functions as a neuro-microclinic.
The modern high-intensity pulsed magnetotherapy Salus Talent A helps alleviate acute and chronic pain and support tissue regeneration. Book an appointment for a painless and comfortable application provided at Neurologie Mištríková in the center of Brno.
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