Halfway through the 3rd chapter

• Here author brings up another interesting case about paralyzed phantom limbs
  • This happens mainly when the arm is paralyzed due to some accident and stays like that for many days, and then it is amputed
    • Basically the brain still treats the arm as paralyzed — it happens like this —
    • The arm is paralyzed, your motor nerves tells the arms to move, the parietal lobe monitors it, but the muscles and the eyes say that the arm is not moving, because it is paralyzed
      • This happens so many times, that the brain kinda caches or remembers that flow, and whenever the motor nerve asks to move, it directly says cant move
      • He was able to trick the brain, by having a mirror setup, in such a way when the patient moved his correct arm, it synced with the phantom arm and his brain thought it is moving, and hence he was able to move his paralyzed arm
        • Once he closed his eyes, it was still stuck there — later after weeks the brain just forgot the arm, and the phantom arm with the pain in elbow just disappeared, while palms and fingers stayed.
• There are also cases of phantom arms from people who are born amputated. Which was surprising
  • She could feel the pain in her finger, when the author moved the coffee cup away from her.
• So basically he derives that there are atleast to ways to move phantom parts,
  • Penfield homonculus mapping (face having sensation in fingers)
  • Vision (the coffee cup moving away, and the patient feeling pain)
  • 3rd is our normal hand, which can have sensations of its own