Article: PDF OnlyOn the Phenomenon of Sudden Death in Animals and ManRICHTER, CURT P. Ph.D.1 Author Information 1Psychobiological Laboratory, Johns Hopkins Medical School, Baltimore, Md. Psychosomatic Medicine 19(3):p 191-198, May 1957. Buy Abstract Summary A phenomenon of sudden death has been described that occurs in man, rats, and many other animals apparently as a result of hopelessness; this seems to involve overactivity primarily of the parasympathetic system. In this instance as in many others, the ideas of Walter Cannon opened up a new area of interesting, exciting research. Copyright © 1957 by American Psychosomatic Society