Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15034
Title: Transcranial direct current stimulation to primary motor area improves hand dexterity and selective attention in chronic stroke
Authors: Au Yeung, SSY 
Wang, J
Chen, Y
Chua, E
Keywords: Dexterity
Selective attention
Stroke
Transcranial direct current stimulation
Issue Date: 2014
Publisher: Lippincott Williams & Wilkins
Source: American journal of physical medicine and rehabilitation, 2014, v. 93, no. 12, p. 1057-1064 How to cite?
Journal: American journal of physical medicine and rehabilitation 
Abstract: Objective: The aim of this study was to determine whether transcranial direct current stimulation (tDCS) applied to the primary motor hand area modulates hand dexterity and selective attention after stroke.Design: This study was a double-blind, placebo-controlled, randomized crossover trial involving subjects with chronic stroke. Ten stroke survivors with some pinch strength in the paretic hand received three different tDCS interventions assigned in random order in separate sessionsVanodal tDCS targeting the primary motor area of the lesioned hemisphere (M1lesioned), cathodal tDCS applied to the contralateral hemisphere (M1nonlesioned), and sham tDCSVeach for 20 mins. The primary outcome measures were Purdue pegboard test scores for hand dexterity and response time in the color-word Stroop test for selective attention. Pinch strength of the paretic hand was the secondary outcome.Results: Cathodal tDCS to M1nonlesioned significantly improved affected hand dexterity (by 1.1 points on the Purdue pegboard unimanual test, P = 0.014) and selective attention (0.6 secs faster response time on the level 3 Stroop interference test for response inhibition, P = 0.017), but not pinch strength. The outcomes were not improved with anodal tDCS to M1lesioned or sham tDCS.Conclusions: Twenty minutes of cathodal tDCS to M1nonlesioned can promote both paretic hand dexterity and selective attention in people with chronic stroke.
URI: http://hdl.handle.net/10397/15034
ISSN: 0894-9115
DOI: 10.1097/PHM.0000000000000127
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