Henry Head in Ewald Hering's laboratory in Prague 1884-1886: an early study on the nervous control of breathing.

Henry Head, the English neurologist, received the main parts of his academic education in Cambridge and in London. In addition, he spent two years in Prague where he worked in the physiology department of the German university under the guidance of Ewald Hering. He was interested in the nervous control of breathing and worked out a new method of recording the tension and the contractions of the diaphragm in anaesthetised animals. His results substantiated the experimental basis of the Hering-Breuer reflexes and included the discovery of a new reflex now named Head's paradoxical reflex. Head not only wrote an extensive paper about his scientific work, the recollections of his time in Prague also formed a considerable part of his autobiographical notes. These were written some forty years later and still expressed a deep affection for his teacher and mentor.