Data from: Diffusion tensor imaging of dolphin brains reveals direct auditory pathway to temporal lobe ...

• Main Authors: Berns, Gregory S., Cook, Peter F., Foxley, Sean, Jbabdi, Saad, Miller, Karla L., Marino, Lori
• Format: Dataset
• Language: English
• Published: Dryad 2015
• Subjects: dolphin; Stenella attenuata; Delphinus delphis; toothed whales
• Online Access: https://dx.doi.org/10.5061/dryad.51s8h; https://datadryad.org/stash/dataset/doi:10.5061/dryad.51s8h

The brains of odontocetes (toothed whales) look grossly different from their terrestrial relatives. Because of their adaptation to the aquatic environment and their reliance on echolocation, the odontocetes' auditory system is both unique and crucial to their survival. Yet, scant data exist about the functional organization of the cetacean auditory system. A predominant hypothesis is that the primary auditory cortex lies in the suprasylvian gyrus along the vertex of the hemispheres, with this position induced by expansion of ‘associative′ regions in lateral and caudal directions. However, the precise location of the auditory cortex and its connections are still unknown. Here, we used a novel diffusion tensor imaging (DTI) sequence in archival post-mortem brains of a common dolphin (Delphinus delphis) and a pantropical dolphin (Stenella attenuata) to map their sensory and motor systems. Using thalamic parcellation based on traditionally defined regions for the primary visual (V1) and auditory cortex (A1), we ... : DelphinusDiffusion files output from FSL bedpostX necessary for tractography. Also includes average structural image (trufi...) and B0 image as well as transform from B0 space to structural space.StenellaDiffusion files output from FSL bedpostX necessary for tractography. Also includes structural image (trufi...) and B0 image. ...