Ge 750 3t mri scanners

MRI scans were acquired on GE 750 3T MRI scanners (GE Healthcare, Waukesha, WI) with an 8-channel head coil. 5-min T1-weighted anatomical scans were obtained using a BRAVO FSPGR sequence: TR = 8.16 ms, TE = 3.18 ms, TI = 450 ms, FOV = 256 mm, matrix size = 256 × 256, flip angle = 12°, number of slices = 156, and slice thickness = 1 mm. For rs-fMRI scans, subjects were instructed to remain relax and awake with their eyes closed. 10-min rs-fMRI data were acquired using a T2^∗-weighted gradient—echo planar imaging (EPI) pulse sequence: 231 volumes, TR = 2,600 ms, TE = 22 ms, FOV = 224 mm, matrix size = 64 × 64, flip angle = 60°, 40 axial slices, and 3 × 3 × 3 mm³ voxels.

Neuroimaging data were acquired at the four aforementioned time points (T4 through T7). For the purposes of this work, we chose to use the data from three of these points, i.e., prior to starting the intervention or pre-intervention assessment (T4), immediately upon completion of intervention or post-intervention assessment (T6) and a month after completion of full intervention (T7) to study the potential peak and carry-over effects of the EEG-based BCI intervention. Rs-fMRI scans were acquired on GE 750 3T MRI scanners (GE Healthcare, Waukesha, WI) using an 8-channel head coil. Ten-minute resting state scans were acquired while participants' eyes were closed using single-shot echo-planar T2^*-weighted imaging: TR = 2600 ms, 231 time-points, TE = 22 ms, FOV = 224 mm, 64 × 64 matrix size, flip angle = 60°, and 40 slices with voxel dimensions of 3.5 × 3.5 × 3.5 mm³. Five-minute T1-weighted anatomical images were obtained at the start of each scan using a BRAVO FSPGR sequence with the following parameters: TR = 8.16 ms, TE = 3.18 ms and TI = 450, matrix size = 256 × 256, 156 slices, flip angle = 12°, FOV = 256 mm with slice thickness = 1 mm.