The brain imaging technique you refer to is the MEG.
Make sure you do not use the exact same thing... I recommend you do this "Expiriment" on your own! :) But I hope this helps!
Answer:
Albumin is produced mainly by the liver. Albumin is the major protein that is acts as the carrier protein for steroids, thyroid hormones and fatty acids in the blood.
Albumin stays in blood vessels as they are too large to move across the capillary walls, in blood vessels by contributing to osmotic pressure or colloid osmotic pressure that maintain water volume. So, the albumin is the protein that is involve primarily on the water reabsorption.
They both can be traced back millions of years ago
Arctic/Polar is the best answer