Found with a modified magnetic resonance imaging technique known as diffusion tensor tractography, the pathway affirms that "the circuit for language is more complex than we thought," Catani says.

The researchers used 'diffusion tensor' magnetic resonance imaging (MRI), which depicts the diffusion, or displacement, of water molecules through tissue.

As new technologies of magnetic resonance imaging, diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI) have been applied in clinical diagnosis.