Who is Dr. Henry Head from The Eye in the Door and what is their importance?

Henry Head (1861 - 1940) is another historical figure who was a real-life colleague of Dr. William Rivers. Head was a neurologist who (in collaboration with William Rivers and others) conducted extensive research on the human nervous system. As stated in the narrative, Head and Williams did, in fact, conduct experiments on how sensation actually functions once severed nerves are reattached. Head was also married to Ruth in real life.