PMC5889880_01
Brain magnetic resonance and fiber tracking images. (a) A brain magnetic resonance image at age 6 showing the mild degree of cerebral atrophy. (b) A fiber tracking image reconstructed corticospinal tract in both hemispheres.
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Magnetic resonance (MR) imaging of his brain at the age of 6 showed a mild degree of cerebral atrophy with no clear BG lesion (Figure 1(a)). Fiber tractography using diffusion tensor imaging revealed no serious damage to the corticospinal tracts on either side (Figure 1(b)).
Typical acceleration data of head motion in a single trial. (a) The raw data along the x-axis (green), y-axis (pink), and z-axis (blue) before, during, and after tDCS. (b) The power spectrum of x-axis (green), y-axis (pink), and z-axis (blue). S and E indicate the start and end of the trial, respectively.
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Acceleration data were recorded at a sampling rate of 1 kHz using an analog-to-digital converter (Power Lab 16/35; AD Instruments, Aichi, Japan) (Figure 2(a)) and were analyzed using specialized software (Lab Chart 7; AD Instruments, Aichi, Japan) to calculate and sum the power spectra within 1-5 Hz for each axis on three dimensions (x-, y-, and z-axis) (Figure 2(b)).
Results of the ratios of the power spectrum data. Mean ratios of the power spectrum data for 3 days before, during, and after the cathodal tDCS (black circles) and the sham tDCS (gray circles) to those before the cathodal tDCS and the sham tDCS, respectively. Asterisk indicates p < 0.05. Error bars indicate standard deviation.
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 Figure 3 showed results of % power data.