MRI technology is improving over time, but I don't know how practical it would be in everyday usage. fNIR can potentially do the same thing much cheaper. I beli

MRI technology is improving over time, but I don't know how practical it would be in everyday usage. fNIR can potentially do the same thing much cheaper. I believe it's restricted to only the first few cm of brain tissue but that might be plenty. With fMRI you can even reconstruct entire videos of what a person is seeing (e.g. https://www.youtube.com/watch?v=nsjDnYxJ0bo https://www.youtube.com/watch?v=nsjDnYxJ0bo). Controlling something simpler should be easier.