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- W2955209237 abstract "INTRODUCTION: A single application of transcranial direct current stimulation (tDCS) delivered to motor cortex improves skill acquisition in relatively simple motor tasks performed unilaterally with the hand and arm. PURPOSE: The purpose of this study was to examine the acute effects of tDCS on skill acquisition in a complex, multi-joint arm movement in healthy young adults. METHODS: The study employed a double-blind, SHAM-controlled, between-subjects experimental design. Twenty-two right-handed adults were randomly assigned to either a tDCS or a SHAM group. Subjects participated in one experimental session that involved overhand throws to a target in a baseline-test block, 5 practice blocks, and a post-test block (10 trials per block). After the baseline-test block, transcranial magnetic stimulation (TMS) was used to locate the first dorsal interosseus muscle (FDI) motor representation area (motor hot spot) of the left hemisphere. Subsequently, motor evoked potentials (MEP) were obtained in the resting FDI muscle prior to and after 5 minutes of tDCS (current: 1 mA). After a 20 minute rest period, tDCS was applied again for 20 minutes to the FDI hot spot while subjects performed the 5 practice blocks of overhand throws. Finally, subjects performed a post-test block of overhand throws 5 minutes after the tDCS/practice session ended. Motor performance was quantified as the endpoint error, whereas MEP amplitude was used to quantify cortical excitability. Percent change in endpoint error between the baseline-test block and the post-test block for the two groups was compared with an unpaired t-test. Similarly, percent change in MEP amplitude before and after the 5 minutes of tDCS for the two groups was compared with an unpaired t-test. RESULTS: The percent change in endpoint error (decrease) was greater for the tDCS group compared to the SHAM group, but this difference just failed statistical significance (-16.9 vs. -5.2%; P = 0.127), whereas the percent change in MEP amplitude was significantly greater for the tDCS group compared to the SHAM group (49.7 vs. -13.5%; P = 0.012). CONCLUSION: These findings indicate that a single-session of tDCS enhances cortical excitability and appears to improve motor skill, although there was high inter-individual response variability to tDCS for this difficult motor task." @default.
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- W2955209237 date "2019-06-01" @default.
- W2955209237 modified "2023-10-16" @default.
- W2955209237 title "The Influence Of Transcranial Direct Current Stimulation On Skill Acquisition In A Complex Motor Task." @default.
- W2955209237 doi "https://doi.org/10.1249/01.mss.0000560810.45956.07" @default.
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