Journal
JOURNAL OF STROKE & CEREBROVASCULAR DISEASES
Volume 33, Issue 1, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jstrokecerebrovasdis.2023.107418
Keywords
Transcranial magnetic stimulation (TMS); Transcranial direct current stimulation (tDCS); Chronic ischemic stroke; Motor impairment; Upper extremity
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This study investigated the effects of transcranial electrical and magnetic stimulation on somatosensory evoked potentials in chronic ischemic stroke patients, finding that the real tDCS and rTMS combination results in significant improvement and is safe for use.
Objective: To investigate the effects of transcranial electrical and magnetic non-invasive brain stimulation (NIBS) protocols on somatosensory evoked potential (SEP) in chronic ischemic stroke. Methods: 33 patients were randomly assigned to one of the four treatment groups of the transcranial direct current stimulation (tDCS) and/or repetitive transcranial magnetic stimulation (rTMS) protocol. SEP parameters were recorded before and after ten days of the treatment session. All the statistical analyses were carried out using SPSS version 19.Results: It was found that there is a statistically significant improvement in the N20-P22 mean amplitude after treatment sessions in all groups except the group where tDCS and rTMS groups were sham. On paired t-tests, the difference betweeen post and pre-stimulation SEP amplitudes for the real tDCS and real rTMS coupled group was 1.045 +/- 0.732 (p value = 0.005). For sham tDCS+real rTMS group, 1.05 +/- 0.96 (P = 0.04); for real tDCS+sham rTMS 0.543 +/- 0.332 (P = 0.01) and for double sham stimulation, 0.204 +/- 0.648 (P = 0.4) respectivelyConclusion: In ischemic stroke patients, either or coupled true transcranial tDCS and rTMS was found to be safe and significantly enhanced the amplitude of cortical somatosensory potentials when combined with standard physiotherapy, in the interim analysis of an ongoing randomised controlled trial. Clinical Trial Registry of India: CTRI/2019/11/022009 Significance: The results of this research indicates the importance of RCTs in developing robust improved NIBS protocols coupled to physiotherapy to enhance the sensory-motor functional recovery following ischemic stroke.
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