32 channel surface coil

Imaging data were collected on a Siemens 7T scanner with a Siemens 32-channel surface coil. Each scan session began with a high resolution T1-weighted Magnetization Prepared Rapid Gradient Echo (MPRAGE) sequence (TE = 3.88 msec; TR = 3000 msec; flip angle = 6°; matrix size = 256 X 256; voxel size = 1 mm × 1 mm x 1 mm; 192 axial slices). The functional images were acquired with a single-shot interleaved gradient-recalled echo planar imaging sequence, with slices positioned to cover all of the occipital and temporal lobes (TE = 27 msec; TR = 2000 msec; flip angle = 70°; matrix size = 126 × 126; voxel size = 1.6 mm × 1.6 mm x 1.6 mm; 43 oblique axial slices, no acceleration was used). Supplementary Figure S3B shows the fMRI scan slice coverage overlaid on a representative human brain.

Scanning was conducted in a Siemens 7T scanner, using a 32-channel surface coil. The EPI scan parameters were: TR = 2 s; TE = 14.29 ms; flip angle = 75˚; 28 slices, in-plane matrix size = 64 × 34. Voxel size was 1.4 mm isotropic. Five anatomical scans were also collected (TR = 6 s; TE = 2.99 ms; 0.75 mm isotropic; MP2RAGE) and then averaged to create the anatomical data used to create reliable cortical surfaces for each subject using FreeSurfer (http://surfer.nmr.mgh.harvard.edu).