Figure 4
Histograms of the invariant indices. Values of fractional anisotropy (FA-a), mean diffusivity (MD-b) parallel diffusivity (c) and perpendicular diffusivity (d) from all tracts. * p< .05; ** p < .01. ASDs: Autism Spectrum Disorders. CC: corpus callosum; Cing: cingulum; DAF: direct segment of the arcuate fasciculus; IAAF: indirect anterior segment of the arcuate fasciculus; IPAF: indirect posterior segment of the arcuate fasciculus. Units of MD, parallel diffusivity and perpendicular diffusivity are 10-3 mm2/s.