NDLI: Comparison of repeated transcranial stimulation and transcranial direct-current stimulation on primary motor cortex excitability and inhibition: A pilot study

Content Provider	EDP Sciences
Author	Vincent Cabibel Makii Muthalib Jérôme Froger Stéphane Perrey
Abstract	Repeated transcranial magnetic stimulation (rTMS) is a well-known clinical neuromodulation technique, but transcranial direct-current stimulation (tDCS) is rapidly growing interest for neurorehabilitation applications. Both methods (contralesional hemisphere inhibitory low-frequency: LF-rTMS or lesional hemisphere excitatory anodal: a-tDCS) have been employed to modify the interhemispheric imbalance following stroke. The aim of this pilot study was to compare aHD-tDCS (anodal high-definition tDCS) of the left M1 (2 mA, 20 min) and LF-rTMS of the right M1 (1 Hz, 20 min) to enhance excitability and reduce inhibition of the left primary motor cortex (M1) in five healthy subjects. Single-pulse TMS was used to elicit resting and active (low level muscle contraction, 5% of maximal electromyographic signal) motor-evoked potentials (MEPs) and cortical silent periods (CSPs) from the right and left extensor carpi radialis muscles at Baseline, immediately and 20 min (Post-Stim-20) after the end of each stimulation protocol. LF-rTMS or aHD-tDCS significantly increased right M1 resting and active MEP amplitude at Post-Stim-20 without any CSP modulation and with no difference between methods. In conclusion, this pilot study reported unexpected M1 excitability changes, which most likely stems from variability, which is a major concern in the field to consider.
Ending Page	67
Starting Page	59
Page Count	9
File Format	HTM / HTML PDF
ISSN	21185735
e-ISSN	21185743
Issue Number	100
Journal	Movement & Sport Sciences - Science & Motricité
DOI	10.1051/sm/2018001
Alternate Webpage(s)	https://articles/sm/abs/2018/02/sm170023/sm170023.html
Language	English
Publisher	EDP Sciences
Publisher Date	2018-01-01
Access Restriction	Open
Rights Holder	© ACAPS, EDP Sciences, 2018
Subject Keyword	non-invasive brain stimulation contralateral hemisphere interhemispheric interactions non-invasive brain stimulation / contralateral hemisphere / interhemispheric interactions
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology Physiology (medical) Social Sciences Physical Therapy, Sports Therapy and Rehabilitation Neuropsychology and Physiological Psychology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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