Who is Harvey Cushing? And what did he do?

Harvey Cushing is an American neurosurgeon who developed new techniques in brain surgery on the Western Front He experimented with the use of a magnet to remove metal fragments from the brain And used local anaesthetic instead of general anaesthetic - the difference between the two is that general anaesthetic makes the patient fall asleep which caused the brain to swell and this could led to increased risks during surgery but local anaesthetic leaves them awake however it prevents the nerves in the affected area from communicating sensations of pain to your brain