Fig. 3.

Image quality metrics across sequences. (a) Contrast-to-noise (CNR), estimated with MRIQC⁸⁷, showed no outliers in either T1w scan (first scan in blue, second scan in green). (b) Motion parameters of diffusion-weighted images were obtained from FSL eddy⁸⁹. The histogram illustrates root mean squared (RMS) voxel-wise displacement relative to the first volume across all shells. Line plots show RMS displacement in each volume relative to the previous volume. (c) Framewise displacement (FD) of resting-state functional scans was obtained using FSL motion outliers, reflecting the average of rotation and translation parameter differences at each volume⁹². The histogram shows subjects-wise average FD across volumes. Line plots show FD across resting-state acquisitions for three participants, with respectively 20^th, 50^th, and 80^th percentile average FD across our sample. Dashed line indicates 0.2 mean FD threshold used for exclusion of participants with excessive motion. Vertex-wise temporal signal-to-noise (tSNR) was calculated on the native surface of each participant. Computed tSNR values were averaged within a 400-node functional parcellation (Schaefer-400) and averaged across individuals.