I don't understand how mice can be used to learn more about MI... Does it tell you it's depressed, anxious or paranoid via behaviour? or is there a machine that translates rodent behaviour into emotion? I don't get it. I understand animals also feel, our dog died of a broken heart, he was miserable depressed after his master (my dad) passed away. But he was a pet, part of our family, we KNEW him and loved for YEARS, so his change was obvious. But mice? Please help me understand, I don't like being in the dark... Thanks in advance.