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Data acquisition and TMS procedures: A 3T TIM Trio System (Siemens, Erlangen, Germany) was used to acquire both a T1-weighted three-dimensional high-resolution structural image (MPRAGE, 176 sagittal slices, TR = 2300 ms, TE = 2.98 ms, TI = 1100 ms, flip angle = 9°, FOV = 240 mm x 256 mm, image matrix = 240 x 256, voxel size = 1 mm x 1 mm x 1 mm, using a 12-channel head coil) and T2*-weighted axial echoplanar images (EPI) with blood oxygenation level dependent (BOLD) contrast (GE-EPI, TR = 3290 ms, TE = 35 ms, flip angle = 90°, FOV = 192 mm x 192 mm, image matrix 64 x 64, 40 axial slices acquired sequentially in ascending direction, slice thickness = 3 mm, interslice gap = 0.3 mm, voxel size = 3 mm x 3 mm x 3.3 mm, using a 1-channel Tx/Rx head coil).
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