Noninvasive brain stimulation leads to fine motor improvement after stroke
Stroke is common and accompanied by complex disabilities — such as lower and upper limb disability, speech impairment, and chronic post-stroke pain. An analysis of published studies found that non-invasive brain stimulation may have bene¿cial effects on ¿ne motor movement in stroke patients and healthy participants, sciencedaily.com reported.
The ¿ndings were published in the European Journal of Neurology.
The meta-analysis examined the effects of two common non-invasive brain stimulation technologies — transcranial direct current stimulation (TDCS) and transcranial magnetic stimulation (TMS) — on hand and ¿nger movement, like picking up objects, writing, or similarly precise tasks that are often affected after a stroke.
The investigators observed statistically signi¿cant gains in ¿ne motor movement in stroke patients following TDCS and TMS; however, time since onset of stroke event, the severity of impairment, combination of non-invasive brain stimulation with other interventions, and risk of bias were all relevant factors. Fine motor improvement in healthy participants’ non-dominant hand (a surrogate to an impaired hand) was also observed.
“Encouragingly, research to re¿ne these gains, understand their impact on lifestyle, and determine best responders to these types of treatments is happening now,” said lead author Dr. Anthony O’brien, of the Spaulding Neuromodulation Center, an af¿liate of Harvard Medical School.