750 scanner

Whole-brain neuroimaging data were collected using a 3 T General Electric 750 scanner and 32-channel head coil. For the nonsocial threat extinction recall task, 343 functional image volumes were collected during 2 runs of 23 min 9 s each. For the social threat extinction recall task, 272 functional image volumes were collected during 3 runs of 10 min 26 s each. For both social and nonsocial threat extinction recall tasks, functional image volumes with 47 contiguous interleaved axial slices (in-plane resolution 2.5 mm, 3 mm slice thickness) were obtained with a T2*-weighted echo-planar sequence (TR = 2300 ms; TE = 25 ms; flip angle = 50; field of view [FOV] = 240 mm; $\text{matrix\hspace{0.17em}}=96\times 96$ ). All functional data were anatomically localized and coregistered to a high-resolution T1-weighted volumetric scan of the whole brain, using a magnetization prepared gradient echo sequence (MPRAGE; TE = min full; TI = 425 ms; flip angle = 7; FOV = 256 mm; $\text{matrix = 256 }\times \text{ 256}$ ; in plane resolution 1.0 mm).

Neuroimaging data were collected using a 3T GE 750 scanner with a 32-channel head coil at one timepoint between child age 7 and 9 years. Two structural T1 images were collected per participant using a 3D FSPGR sequence (11° flip angle, TE = 2.588 ms, TR = 6.412 ms, 180 slices, 1 mm isotropic resolution). Structural images were visually inspected, and subjects with apparent motion artifacts were excluded. T1 images were anatomically segmented using the recon-all command in FreeSurfer v6.0, segmentations were visually inspected by a trained research assistant for quality assurance, and amygdala and hippocampal volumes were extracted (Fischl et al., 2002 (link), 2004 (link)).

Functional and anatomical images were collected on a 3T GE 750 scanner. Structural T1 images were collected with an eight-channel head coil using a three-dimensional (3D) FSPGR sequences (flip angle = 11, TE = 2.588 ms, TR = 6.412 ms, 180 slices, 1 mm × 1 mm × 1 mm resolution). Two runs of resting state data were acquired with a 32-channel head coil using an echo planar imaging (EPI) sequence (flip angle = 77, TE = 30 ms, TR = 2,000 ms, 34 slices, 3.5 mm × 3.5 mm × 3.5 mm resolution, 140 acquisition frames, 4 min and 40 s long).

Functional and anatomical images were acquired on a 3T GE 750 scanner with a 32-channel head coil. Two structural T1 images were collected for each participant with an 8-channel head coil using a 3D FSPGR sequence (flip angle=11, TE=2.588ms, TR=6.412ms, 180 slices, 1mm isotropic resolution). Two runs of resting-state data were acquired using an echo planar imaging (EPI) sequence (flip angle=77, TE=30ms, TR=2000ms, 34 slices, 3.5mm isotropic resolution, 140 acquisition frames, 4 minutes and 40 seconds long). During the two resting-state runs, participants were instructed to rest quietly with their eyes open without falling asleep. The examiner monitored that participants kept their eyes open and stayed awake during these scans using an in-scanner eye-tracking camera.