Yes. They use 800nm wavelength which is near infrared. I don't think this can give a structural image, but not sure what this can be used whatsover. It is prob

Yes. They use 800nm wavelength which is near infrared. I don't think this can give a structural image, but not sure what this can be used whatsover. It is probably more comparable to fmri because the technique, applied on short source-detector paths, is usually showing fluctuations in oxygenation levels in the cortex, as proxy of brain activity, but in contrast to fmri it could not go deeper into subcortical structures of the brain.