Images were collected on a 3T MR750 General Electric Scanner (Waukesha, Wisconsin, USA) using a 32-channel head coil. 170 whole brain T*2 weighted echo-planar images were collected across four functional runs (TR=2000ms, TE=25, flip angle=60, field of view=96×96, slices=42/axial/3mm). For all participants structural images were collected using a structural magnetization-prepared rapid acquisition gradient echo (MPRAGE) sequence (TR=7.66, TE=3.42, flip angle=7, field of view=256×256, slices=176/sagittal/1mm).
All imaging analyses were conducted using Analysis of Functional Neuroimages (AFNI). All images were first preprocessed using afni.proc.py. Images were de-spiked, slice time corrected, co-registered, spatial smoothed with a 6mm full-width half maximum smoothing kernel, and warped to standard spaces. For motion correction, TR pairs with a Euclidean norm motion derivative that exceeded 1mm were censored (movement post-censoring: M[SD]=0.06[0.04]). Finally, at the subject level, a general linear model with 6 regressors time-locked to the stimulus onset was used to model trial condition (congruent or incongruent trials) and response type (correct, commission error, or omission error). Nuisance regressors included motion displacement along the x, y, and z axes as well as rotational movement (roll, pitch, and yaw).
All imaging analyses were conducted using Analysis of Functional Neuroimages (AFNI). All images were first preprocessed using afni.proc.py. Images were de-spiked, slice time corrected, co-registered, spatial smoothed with a 6mm full-width half maximum smoothing kernel, and warped to standard spaces. For motion correction, TR pairs with a Euclidean norm motion derivative that exceeded 1mm were censored (movement post-censoring: M[SD]=0.06[0.04]). Finally, at the subject level, a general linear model with 6 regressors time-locked to the stimulus onset was used to model trial condition (congruent or incongruent trials) and response type (correct, commission error, or omission error). Nuisance regressors included motion displacement along the x, y, and z axes as well as rotational movement (roll, pitch, and yaw).