How do DTI and fMRI work, and what can respectively method recount us almost the structure and function of the brain?

Please help, im really stuck at the moment I am attempting to write an essay on this and cant quite grasp the underlying links between structure and function for each method?
Answers:
Highly controlled. You may do your own homework. Source(s): http://en.wikipedia.org/wiki/Diffusion_t…
http://en.wikipedia.org/wiki/FMRI
http://www.google.co.in/search?hl=en&q=T…

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