Table 2.
White matter regions reported as changed in fractional anisotropy (FA) or mean diffusivity (MD) in 16 voxel-based studies.
| Epilepsy | N | Regions with decrease in FA | Regions with increase in MD |
|---|---|---|---|
| BECTS | 1 | – | Internal capsule, superior longitudinal fasciculus, thalamo-cortical radiations (100%) |
| FLE | 1 | External capsule (100%) | Frontal lobe (100%) |
| TLE | 7 | Arcuate fasciculus, thalamo-cortical radiations (14%); cortico-spinal tracts, external capsule, fornix, internal capsule, inferior longitudinal fasciculus, motor projections, superior longitudinal fasciculus (29%); cerebellum, temporal lobe, uncinate fasciculus (43%); corpus callosum (57%) | Arcuate fasciculus, brainstem, cortico-spinal tract, fornix, external capsule, internal capsule, inferior fronto-occipital fasciculus, superior longitudinal fasciculus (14%); inferior longitudinal fasciculus, uncinate fasciculus (29%); temporal lobe (43%); corpus callosum (57%) |
| Partial | 1 | Fornix, thalamo-cortical radiations (100%) | Fornix (100%) |
| Generalized | 5 | Brainstem, cerebellum, cortico-spinal tract, frontal lobe, internal capsule, inferior fronto-occipital fasciculus, inferior longitudinal fasciculus, parahippocampal fasciculus, superior longitudinal fasciculus, thalamo-cortical radiations (20%); cingulum, corona radiata, parietal lobe (40%); corpus callosum (60%) | Cerebellum, cingulum, corona radiata, cortico-spinal tract, frontal lobe, internal capsule, inferior fronto-occipital fasciculus, inferior longitudinal fasciculus, superior longitudinal fasciculus, thalamo-cortical radiations (20%); corpus callosum, parietal lobe (40%) |
| Various | 1 | Cingulum, fornix (100%) | Corpus callosum, thalamo-cortical radiations (100%) |
BECTS, benign epilepsy with centro-temporal spikes; FLE, frontal lobe epilepsy; Generalized, generalized epilepsy; N, number; Partial, different types of partial epilepsy; TLE, temporal lobe epilepsy; Various, generalized and partial epilepsy together. Data given as part (%) of total number of included voxel-based studies on the same type of epilepsy (N).