A Brain Stroke occurs when the vital blood supply to a part of the brain is disrupted, leading to the rapid loss of brain function.
This disruption can be due to either ischemia (insufficient blood flow caused by a blockage) or hemorrhage (bleeding within or around the brain).
When an area of the brain doesn't receive enough blood or is damaged by bleeding, it cannot function normally.
This can result in a wide range of impairments, such as motor deficits affecting one or more limbs on one side of the body (hemiparesis or hemiplegia), difficulties with speech comprehension or articulation (aphasia), or vision impairments affecting one side of the visual field.
Ischemic strokes, which are the most common type, are caused by blockages in blood vessels, originating either from a blood clot that forms in the brain (thrombosis), a traveling clot from elsewhere in the body (arterial embolism), or a significant reduction in overall blood flow to the brain (cerebral hypoperfusion).
Hemorrhagic strokes, conversely, are caused by the rupture of fragile blood vessels in the brain, leading to bleeding directly into the brain tissue or into the fluid-filled space surrounding the brain (subarachnoid space).
Deep Transcranial Magnetic Stimulation (Deep TMS) represents an innovative, non-invasive approach being explored to enhance recovery in stroke rehabilitation by stimulating specific brain areas.
Aphasia Improvement: A recent sham-controlled study investigated the effectiveness of BrainsWay's Deep TMS H-coil over the right inferior frontal gyrus in post-stroke patients suffering from aphasia (difficulty with speech).
The results provided compelling evidence that high-frequency Deep TMS in this particular area can significantly improve naming performance in patients with chronic post-stroke aphasic deficits, offering hope for communication recovery.
Lower Limb Motor Function: Another sham-controlled study explored the feasibility and efficacy of BrainsWay's Deep TMS H-coil treatment over the motor cortex for stroke patients experiencing deficiencies in lower limb motor functions.
This study found that real Deep TMS, as opposed to sham treatment, was associated with a significant improvement in lower limb Fugl-Meyer scores (p<0.001), a standard measure of motor function, and also showed improvement in the 10-meter walk test (p=0.05).
This positive effect not only persisted but even increased over a four-week follow-up period, suggesting a lasting beneficial impact.
A significant increase in walking speed during the 10-meter walk test (p=0.04) was also observed after real Deep TMS compared to sham treatment.
For stroke survivors, rehabilitation aims for a form of 'remission' defined by significant functional recovery – regaining lost abilities and maximizing independence.
Deep TMS is proving to be a powerful catalyst in achieving these crucial 'good results.' Clinical studies highlight its ability to profoundly enhance recovery: for aphasia, it significantly improves naming performance, aiding communication.
For motor deficits, it leads to significant improvements in lower limb motor function (demonstrated by p<0.001 in Fugl-Meyer scores and p=0.05 in the 10-meter walk test), with these benefits not only persisting but even increasing over a four-week follow-up.
This indicates Deep TMS can effectively accelerate the restoration of lost abilities, contributing to a more complete and lasting functional recovery for stroke patients.
In Summary
Stroke is a critical medical emergency leading to diverse neurological impairments, and comprehensive rehabilitation is essential for recovery.
While traditional rehabilitation methods are foundational, emerging approaches like Deep TMS show significant promise in accelerating and enhancing the restoration of lost functions.