“…Functional acquisition comprised 16 quasi-axial slices (1-mm thick) ( Figure 1B , yellow box). At 3T, based on the success of our previous work in the colliculi ( Katyal et al, 2009 ; Katyal and Ress, 2014 ; Savjani et al, 2018 ; Truong et al, 2020 ), we used a two-shot outward-spiral acquisition ( Glover, 1999 ; Singh et al, 2018 ) to obtain an inplane pixel size of 1.5 mm, 160 mm FOV with ten 1.5-mm-quasi-axial slices ( Figure 1B , red box), resulting in an acquisition time of 25 ms for each shot. Considering a linear increase in signal-to-noise-ratio (SNR) with magnetic field strength, this voxel size gives similar SNR as 1 mm 3 voxels at 9.4T.…”