Table 1.
Description of ROIs included in analysis.
| group | name | connection | abbreviation |
|---|---|---|---|
| all WM average | all | all | |
| core tract groups | projection | cortical <> subcortical | proj |
| association | cortical <> cortical | assoc | |
| limbic | cortical <> limbic | assoc.limb | |
| callosal | interhemispheric | cal | |
| cerebellar | cerebellar input/output | cer.c | |
| projection tracts | medial lemniscus | spinal cord <> brainstem | ML |
| pontine crossing tract | spinal cord and cerebellar crossing fibers | PCT | |
| corticospinal tract (brainstem portion) | sensorimotor | CST | |
| cerebral peduncle | brainstem <> internal capsule | CP | |
| internal capsule (anterior) | thalamus <> frontal cortical | IC.A | |
| internal capsule (posterior) | corticospinal and thalamocortical | IC.P | |
| internal capsule (retrolenticular) | thalamus <> posterior cortical | IC.R | |
| corona radiata (anterior) | internal capsule <> cortical | CR.A | |
| corona radiata (superior) | internal capsule <> cortical | CR.S | |
| corona radiata (posterior) | internal capsule <> cortical | CR.P | |
| posterior thalamic radiation | optic radiation | PTR | |
| association tracts | superior fronto-occipital fasciculus | frontal <> parietal <> occipital | SFOF |
| sagittal stratum | frontal <> occipital <> temporal | SS | |
| external capsule | frontal <> parietal <> occipital <> temporal | EC | |
| uncinate fasciculus | hippocampus <> orbitofrontal cortex | UF | |
| superior longitudinal fasciculus | frontal <> parietal <> occipital <> temporal | SLF | |
| limbic tracts | fornix (column/body) | hippocampus <> septal nuclei | FOR.CB |
| fornix (crescent) | hippocampus <> septal nuclei | FOR.C | |
| cingulum (cingulate portion) | hippocampus <> parietal <> frontal | CIN.CG | |
| cingulum (hippocampal portion) | hippocampus <> parietal <> frontal | CIN.H | |
| callosal tracts | corpus callosum (genu) | interhemispheric frontal | CAL.G |
| corpus callosum (body) | interhemispheric sensorimotor/posterior | CAL.B | |
| corpus callosum (splenium) | interhemispheric posterior | CAL.S | |
| corpus callosum (tapetum) | interhemispheric posterior | CAL.T | |
| cerebellar tracts | cerebellar peduncle (inferior) | cerebellar input | CER.I |
| cerebellar peduncle (middle) | cerebellar input | CER.M | |
| cerebellar peduncle (superior) | cerebellar output | CER.S | |
| cortical RTZs | parietal | par | |
| occipital | occ | ||
| sensorimotor | sm | ||
| frontal | fron | ||
| temporal | temp | ||
| subcortical RTZs | cerebellar | cer.p | |
| medial temporal | mt | ||
| basal ganglia | bg | ||
| thalamus | thal |
A description of the ROI and abbreviations used in figures and tables are detailed as well. Shading is used as a visual aid to separate groups of ROIs, identifying separate groups used for Holm corrections (see section 2.3 for more details).