Effects of repetitive transcranial magnetic stimulation on electroencephalographical measures of poststroke upper limb dysfunction: study protocol for a randomized controlled trial

Comprehensive Summary

This study discusses patients who have experienced strokes and currently struggle with upper limb malfunction, and investigates how repetitive transcranial magnetic stimulation could be used in aiding motor recovery for these patients. The study randomizes 42 stroke patients with upper-limb dysfunction into a high-frequency rTMS group and a low-frequency rTMS group, with a 1:1 ratio. The high-frequency group used a 90% resting motor threshold and 10 Hertz, acting on the ipsilesional M1 for a total of 1500 pulses over 2 weeks; the low-frequency group used the same experimental parameters, except that 1 Hertz was used, acting on the contralesional M1. The National Institutes of Health Stroke Scale (NIHSS), motor deficit (Fugl-Meyer Assessment Upper Extremity (FMA-UE), Modified Barthel Index (MBI), and resting-state electroencephalogram (EEG) were all recorded at baseline and within 1 week after rTMS. The study contributes to the medical literature of the brain’s neurophysiological reactions to high-frequency and low-frequency rTMS changes in people who have suffered a stroke.

Outcomes and Implications

This study increases clinical knowledge about therapies that are noninvasive for post-stroke patients struggling with motor dysfunction. Through bigger trials, rTMS may be used by medical professionals in protocols regarding stroke rehabilitation alongside physical therapy. The study’s authors say that more research about the study’s stimulation parameters and patient population would greatly aid in the development of rTMS as a therapy.