NCT02399540.

Trial name or title	Late LTP‐like plasticity effects of tDCS in chronic stroke patients
Methods	RCT with parallel‐group design
Participants	Estimated enrolment: 80 Inclusion criteria: aged 18 to 79 years; stroke onset > 6 months prior to enrolment; motor deficit in the upper limb due to the stroke Exclusion criteria: absence of MEPs; absence of voluntarily movement (Fugl‐Meyer Stage < III); head injury or metal in the head; history of cranial irradiation; history of epilepsy; pacemaker; anticonvulsant or neuroleptic medication; substance abuse; inability to understand instructions; history of psychiatric disorders
Interventions	4 arms Day 1: sham tDCS; Day 2: sham tDCS Day 1: sham tDCS; Day 2: conventional paired tDCS Day 1: conventional unpaired tDCS; Day 2: sham tDCS Day 1: late LTP‐like plasticity tDCS; Day 2: sham tDCS
Outcomes	Primary outcome measures Motor skill retention (at day 9) Secondary outcome measures Maximum grip force (at day 1 and at day 9) PPT (at day 1 and at day 9)
Starting date	March 2015
Contact information	Contact: Rick van der Vliet, MSc Rijndam Rotterdam, Zuid‐Holland, Netherlands, 3015LJ
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