Table 2. tDCS application details along with acquisition details of the MRS and structural MRI sequences. LOC: lateral occipital complex; SOR: supra-orbital ridge.
| # Reference | Intensity (mA) | Duration (min) | Anode | Cathode | Electrode dimensions (cm*cm) | Scanner and field strength | MRS Sequence | MRS TR/TE (ms) |
Voxel size (cm3) |
Number of averages | Acquisition duration (min) | Location (MRS) |
Sequence (Structural) |
TR (ms)/TE (ms)/flip angle | Resolution (mm)/Grappa factor |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 Dataset 1 (unpublished) | 1 | 10 | Left M1 | Right SOR | 5*7 | Siemens Magnetom 7T |
Semi-LASER | 5000/36 | 2*2*2 | 64 | 5.3 | Primary motor cortex | MPRAGE | 2200/2.82/7” | 1 x 1 x 1/2 |
| 2 [27] | 1 | 20 | Right LOC (temporal cortex) | Left SOR | 5*7 | Siemens Magnetom 7T |
Semi-LASER | 5000-6000/ 36 | 2*2*2 | 65-130 | 10 | Temporal cortex | MPRAGE | 2200/2.96/- | 0.7 x 0.7 x 0.7/- |
| 3 [26] | 1 | 10 | Left M1 | Right SOR | 5*7 | MRS: Siemens Magnetom 7T Structural: Siemens Verio 3T |
Two-voxel interleaved semi-LASER1 | 7000/30 | 2*2*2 | 64 per voxel | 12 | Primary motor cortex | Multigradient echo | 2530/ 1.79,3.65,5.51,7.37/- |
1×1×1/- |
| 4 [36] | 1 | 20 | Right LOC (temporal cortex) | Left SOR | 5*7 | Siemens Magnetom 7T |
Semi-LASER | 5000- 6000/36 |
2*2*2 | 96-128 | 10 | Temporal cortex | MPRAGE | 2200/2.96/- | 0.7 × 0.7 × 0.7/- |
| 5 [25] | 1 | 20 | Left M1 | Right SOR | 5*7 | Siemens Verio 3T |
MEGA-PRESS | 2000/68 | 2*2*2 | 144 * 3 | 13.5 | Primary motor cortex | MPRAGE | 2040/5/8” | 1×1×1/- |