MRI does it again. Using advanced mathematical analysis scientists have developed a way to take pictures of water diffusing along nerve axons. This provides a picture of how the nerves are connected or the connectome. Different pathologies will result in incorrect neural connections in the human brain. This is different from all the studies one hears about today showing which areas of the brain are active under certain conditions. This technique doesn't show directly which areas of the brain are active how they are connected.
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