descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2016 English Publisher:Elsevier BVJournal:Brain Stimulation, volume 9, pages 525-528 (issn: 1935-861X,

Authors: M. Bortoletto; C. Rodella; R. Salvador; P.C. Miranda; C. Miniussi;

doi: 10.1016/j.brs.2016.03.001

pmid: 27061368

handle: 10807/176610 , 11572/152085

Reduced Current Spread by Concentric Electrodes in Transcranial Electrical Stimulation (tES)

- Summary
- Subjects
- Metrics

Abstract

We propose the use of a new montage for transcranial direct current stimulation (tDCS), called concentric electrodes tDCS (CE-tDCS), involving two concentric round electrodes that may improve stimulation focality.To test efficacy and focality of CE-tDCS, we modelled the current distribution and tested physiological effects on cortical excitability. Motor evoked potentials (MEPs) from first dorsal interosseous (FDI) and abductor digiti minimi (ADM) were recorded before and after the delivery of anodal, cathodal and sham stimulation on the FDI hotspot for 10 minutes.MEP amplitude of FDI increased after anodal-tDCS and decreased after cathodal-tDCS, supporting the efficacy of CE-tDCS in modulating cortical excitability. Moreover, modelled current distribution and no significant effects of stimulation on MEP amplitude of ADM suggest high focality of CE-tDCS.CE-tDCS may allow a better control of current distribution and may represent a novel tool for applying tDCS and other transcranial current stimulation approaches.

Related Organizations

Catholic University of the Sacred Heart
Italy
University of Brescia
Italy
University of Trento
Italy
University of Lisbon
Portugal

Keywords

Adult, Male, Focality, Motor Cortex, Evoked Potentials, Motor, Transcranial Direct Current Stimulation, Modelling, Motor evoked potentials, tDCS, Young Adult, Electrode shape, Electric field, Motor cortex, Humans, Transcranial direct current stimulation, Female, tDCS; Transcranial direct current stimulation; Motor evoked potentials; Motor cortex; Modelling; Focality; Electric field; Electrode shape; tES; montage, tES montage, Electrodes

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	66
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%