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Dolphin brain circuitry hints at how they sense sound
Neuroscientists have for the first time mapped the sensory and motor systems in the brains of dolphins. The video features a computer simulation of white matter tracts in the dolphin brain and an interview with Emory University neuroscientist Gregory Berns. The researchers applied a novel technique of diffusion tensor imaging (DTI) on the preserved brains of two dolphins that died after standing on a beach. Dolphins use echolocation and the results show that at least two areas of the dolphin brain are associated with the auditory system, unlike most mammals that primarily process sound in a single area. In fact, the dolphin auditory system resembles that of the bat.

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