Data were collected using a Siemens TRIO 3 T MRI scanner over a period of 12 sessions on separate days, each commencing at midnight. fMRI scan data from task and resting‐state scans were analyzed and T1‐weighted and T2‐weighted images were used to preprocess fMRI scans. Four T1‐weighted scans (0.8 mm isotropic, TR = 2400 ms, TE = 3.74 ms, T1 = 1000 ms, FA = 8°, 224 sagittal slices) and four T2‐weighted scans (0.8 mm isotropic, TR = 3200 ms, TE = 479 ms, 224 sagittal slices) were acquired per participant. Details on the MRA and MRV scans are provided in the original MSC study (Gordon et al., 2017 (link)).
Functional images were acquired using a gradient‐echo EPI BOLD sequence (TR = 2200 ms, TE = 27 ms, FA = 90°, voxel size = 4 × 4 × 4 mm3, 36 axial slices), with one gradient field map sequence collected in each session with the same prescription as the functional scans. For each participant, a total of 300 min of rest fMRI and 350 min of task fMRI scans were collected over 10 subsequent days. An eye‐tracker camera was used to assess participant wakefulness. In line with previous studies (Gordon et al., 2017 (link); Gratton et al., 2018 (link)), one participant, MSC08, was excluded from this study due to self‐reported sleep, prolonged eye closures, and a large amount of head motion.
Functional images were acquired using a gradient‐echo EPI BOLD sequence (TR = 2200 ms, TE = 27 ms, FA = 90°, voxel size = 4 × 4 × 4 mm3, 36 axial slices), with one gradient field map sequence collected in each session with the same prescription as the functional scans. For each participant, a total of 300 min of rest fMRI and 350 min of task fMRI scans were collected over 10 subsequent days. An eye‐tracker camera was used to assess participant wakefulness. In line with previous studies (Gordon et al., 2017 (link); Gratton et al., 2018 (link)), one participant, MSC08, was excluded from this study due to self‐reported sleep, prolonged eye closures, and a large amount of head motion.
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