MRI: Brain Imaging Gets More Functional

Functional magnetic resonance imaging (fMRI) is a technique widely used tdoay in studying the human brain but its actual value in correlation is unclear.   No one knows exactly how fMRI signals are generated at brain cell level but it is crucially important to interpreting these imaging signals. Scientists from the Academy of Finland's Neuroscience Research Programme (NEURO) say they have discovered that astrocytes, support cells in brain tissue, play a key role in the generation of fMRI signals. read more

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