Help about mne beer lambert law

Hello:

I am currently studying functional near-infrared spectroscopy (fNIRS) data and have noticed that MNE uses the modified Beer-Lambert Law in its computations. I have a couple of questions I hope someone could help me with:

  1. What is the final unit of HbO calculated by MNE?
  2. When processing OD data in real-time, how should I compute delta OD?

Thank you in advance for your assistance.

Best regards,