Signa explorer scanner

MRI images of 24 participants were acquired on a 1.5‐T Signa Explorer scanner equipped with an eight‐channel parallel head coil (GE Healthcare, Milwaukee, WI, USA). In particular, three‐dimensional T1‐weighted images (gradient‐echo sequence Inversion Recovery prepared Fast Spoiled Gradient Recalled‐echo, time repetition = 8.216 ms, TI = 450 ms, TE = 3.08 ms, flip angle = 12, voxel size = 1 × 1 × 1.2 mm³; matrix = 256 × 256) were acquired. From the total of 24 women recruited, 22 performed the RM while two subjects refused it and a standard template was used for source reconstruction.

Magnetic resonance imaging (MRI) data were used for the source reconstruction. Based on an MRI, the volume conduction model proposed by Nolte was considered and the Linearity Constrained Minimum Variance (LCMV) beamformer was implemented to reconstruct time series related to the centroids of 116 regions of interest (ROIs), derived from the Automated Anatomical Labeling (AAL) atlas [44 (link)]. MRI images of thirty-two young adult males were acquired on a 1.5-T Signa Explorer scanner equipped with an 8-channel parallel head coil (General Electric Healthcare, Milwaukee, WI, USA). MR scans were acquired after the end of the SD protocol. In particular, three-dimensional T1-weighted images (gradient-echo sequence Inversion Recovery prepared Fast Spoiled Gradient Recalled-echo, time repetition = 8.216 ms, TI = 450 ms, TE = 3.08 ms, flip angle = 12, voxel size = 1 × 1 × 1.2 mm1; matrix = 256 × 256) were acquired.

All the participants were subjected to magnetic resonance imaging (MRI) after the SDP, then after the MEG recording in order to minimize the noise derived from electromagnetic fields. These data were fundamental for allowing an accurate source reconstruction with regard to the MEG signal processing pipeline. The MRI images of thirty-two young male adults were acquired on a 1.5 T Signa Explorer scanner equipped with an 8-channel parallel head coil (General Electric Healthcare, Milwaukee, WI, USA). In particular, three-dimensional T1-weighted images were acquired (details are reported in [26 (link)]).