Exact information about the functional significance of the deep sections of the brain is only obtained by working through the brain histologically in serial section.

Life
Hess was born in Frauenfeld as the second of three children to Clemens Hess and Gertrud Hess (née Fischer). On the other hand stimulation of the posterior part led to extreme excitement and defense-like behavior. He developed a viscosimeter to measure blood viscosity and publiWalter Rudolf Hessd his dissertation in 1906 titled Zum Thema Viskosität des Blutes und Herzarbeit.

Walter Rudolf Hess (March 17 1881 – August 12 1973) was a Swiss physiologist who won the Nobel Prize in Physiology or Medicine in 1949 for mapping the areas of the brain involved in the control of internal organs. He shared the prize with Egas Moniz.