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. 2017 May 29;10:1317–1326. doi: 10.2147/JPR.S129791

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© 2017 Motoyama et al. This work is published and licensed by Dove Medical Press Limited

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Mean power of regions of interest (ROIs) of the needle and cotton swab conditions at α/β bands during 1500–2000 ms, and γ bands for 1000–1500 ms. (A) Error bars indicate standard error. Asterisks (*) indicate significant differences using one-sample t-test comparisons (p < 0.05). Relationship between the mean power of ROIs and the visual analog scale (VAS) subjective rating of aversion is shown. (B) The mean power of ROIs of the γ band was positively correlated with VAS scores (r = 0.624, p = 0.007).