Fear is the only feeling she has ever experienced. A three-month-old kitten is placed under anesthesia and locked into a metal frame so her head cannot move. Surgeons cut away part of her skull to expose her brain. Researchers inject a virus into her brain tissue and deliberately trigger a stroke to study blood flow and injury. After the scans, she is killed and her brain is removed and sliced to measure the damage. Some kittens are bred with severe brain disorders and injected with…
