Small Enhancement of Bimanual Typing Performance after 20 Sessions of tDCS in Healthy Young Adults

dc.contributor.authorSevilla-Sánchez, Marta
dc.contributor.authorHortobágyi, Tibor
dc.contributor.authorFogelson, Noa
dc.contributor.authorIglesias-Soler, Eliseo
dc.contributor.authorCarballeira, Eduardo
dc.contributor.authorFernandez-del-Olmo, Miguel
dc.date.accessioned2024-12-27T15:35:19Z
dc.date.available2024-12-27T15:35:19Z
dc.date.issued2021-05-08
dc.description.abstractTranscranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that may improve motor learning. However, the long-term effects of tDCS have not been explored, and the ecological validity of the evaluated tasks was limited. To determine whether 20 sessions of tDCS over the primary motor cortex (M1) would enhance the performance of a complex life motor skill, i.e., typing, in healthy young adults. Healthy young adults (n = 60) were semi-randomly assigned to three groups: the tDCS group (n = 20) received anodal tDCS over M1; the SHAM group (n = 20) received sham tDCS, both while performing a typing task; and the Control group (CON, n = 20) only performed the typing task. Typing speed and errors at maximum (mTT) and submaximal (iTT) speeds were measured before training, and after 10 and 20 sessions of tDCS. Every subject increased maximum typing speed after 10 and 20 tDCS sessions, with no significant differences (p > 0.05) between the groups. The number of errors at submaximal rates decreased significantly (p < 0.05) by 4% after 10 tDCS sessions compared with the 3% increase in the SHAM and the 2% increase in the CON groups. Between the 10th and 20th tDCS sessions, the number of typing errors increased significantly in all groups. While anodal tDCS reduced typing errors marginally, such performance-enhancing effects plateaued after 10 sessions without any further improvements in typing speed. These findings suggest that long-term tDCS may not have functionally relevant effects on healthy young adults' typing performance.
dc.identifier.citationSevilla-Sanchez M, Hortobágyi T, Fogelson N, Iglesias-Soler E, Carballeira E, Fernandez-Del-Olmo M. Small Enhancement of Bimanual Typing Performance after 20 Sessions of tDCS in Healthy Young Adults. Neuroscience. 2021 Jul 1;466:26-35. doi: 10.1016/j.neuroscience.2021.05.001. Epub 2021 May 8. PMID: 33974964.
dc.identifier.doi10.1016/j.neuroscience.2021.05.001
dc.identifier.issn0306-4522
dc.identifier.urihttps://hdl.handle.net/10115/48177
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.rights.accessRightsinfo:eu-repo/semantics/closedAccess
dc.subjectlong-term;
dc.subjectmotor learning
dc.subjectmotor skills
dc.subjectnon-invasive brain stimulation
dc.subjecttranscranial direct current stimulation (tDCS).
dc.titleSmall Enhancement of Bimanual Typing Performance after 20 Sessions of tDCS in Healthy Young Adults
dc.typeArticle

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