[The significance of integrated function states in the field of space medical research].

The integrated functional changes of astronauts are the important aspects in the research field of space medicine, but they remain to be studied. The purpose of this paper is to discuss the significance of research on integrated function state and the ways to study it. Based on the functional changes of the nervous, the endocrine and the immune systems under adverse environmental factors, and the interrelationship among the various changes, the author put forward a proposal of three types of integrated function states, that may appear in astronauts during space flight, namely: depression type, stress type and blood stasis type. The author also recommended some aspects of research of the integrated function states of astronauts.