We studied the arcuate fasciculus in both cerebral hemispheres in 29 healthy subjects, by evaluating GM projections and along-tract diffusion properties and tract curvature, obtained with three tractography methods: probabilistic ball-and-sticks model, deterministic and probabilistic spherical deconvolution. In all subjects we detected the arcuate in both hemispheres. For all the tractography methods we measured a bigger tract volume on the left, but detected more tracts branching towards GM terminations on the left only with the probabilistic methods, that influenced both the tract curvature and its diffusion parameters. The probabilistic tractography methods better described arcuate connectivity, which is more complex in the left hemisphere.
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