Table 2 GLM results

From: The myeloarchitecture of impulsivity: premature responding in youth is associated with decreased myelination of ventral putamen

Cluster location Effect sizea T- or F-statistic Z Cluster-level p Extent [voxel] Peak MNI-coordinate
       X [mm] Y [mm] Z [mm]
GLM 1: Premature responding effect, covarying for age, sex, and EP
Left putamen − 1.08 × 103 − 4.13 − 3.95 0.035 2181 − 28 10 − 12
Effect of covariate terms (age, sex, and EP) (GLM 1 vs. 2)
Basal ganglia/brain stem 0.0147 13.17 4.99 0.0001 18447 − 4 − 13 − 13
Precentral gyrus 0.0423 10.08 4.31 0.035 1437 − 3 − 22 74
Occipital fusiform gyrus 0.0916 9.36 4.13 0.031 1478 26 − 82 − 8
GLM 3: Premature responding effect, covarying for age, sex, and EP, k, and CE
Left putamen − 8.09 × 10−4 − 4.21 − 4.01 0.007 3074 − 28 − 7 − 8
Right putamen − 8.43 × 10−4 − 4.07 − 3.89 0.010 2904 28 − 8 − 10
  1. Results from the general linear model (GLM) testing the relationship between premature responding and R1 (longitudinal relaxation rate) in the left and right putamen. GLM 1 includes age, sex, and EP as covariates; GLM 2 does not include these covariates; GLM 3 includes the covariates of GLM 1, plus a measure of delay discounting (k) and commission error rate (CE). Cluster location was identified based on Harvard-Oxford Subcortical Atlas in FSL (https://fsl.fmrib.ox.ac.uk/). aNote here that effect sizes are contrast estimates, which are weighted sums of individual β-coefficients for the F-contrast and individual β-coefficients for the T-contrasts