Abstract: Objective To investigate the structural connectivity between visual cortex and auditory cortex in healthy adults.
Methods Diffusion tensor imaging was performed to examine the brain of 21 healthy adult subjects. The structural
connectivity was calculated based on fractional anisotropy (FA) value of the visual and auditory cortices, and fiber tracking
was performed between the visual cortex and auditory cortex. Results Positive structural connectivity was demonstrated
between the bilateral visual cortices, and between the bilateral auditory cortices. Ipsilateral primary auditory cortex presented
a negative structural connectivity with the ipsilateral visual cortex, and a positive structural connectivity with the contralateral
visual cortex. A positive connectivity was demonstrated between the secondary auditory cortex and visual cortex. Tracking
analysis showed fiber connectivity between the bilateral visual cortices, and between the ipsilateral auditory and visual
cortices. Conclusion Intrinsic structural connectivity is present between the visual cortex and auditory cortex in the brain of
healthy adults.