Who is Weir Mitchell (American), Sir Henry Head (British), Leont'ev from A Leg to Stand On and what is their importance? A_Leg_to_Stand_On English & Literature "Weir Mitchell (American)

Weir Mitchell, Sir Henry Head, and Leont'ev were physicians. Over the course of his research, Sacks comes across writings by these three physicians that refer to and analyze similar instances to the author's of limb alienation. As a result, he discovered that he was not alone in his experiences, concerns, interest in researching the condition further.