Sociophysiology
Sociophysiology is the interplay between society and physical functioning (Freund 1988: 856) involving collaboration of two neighboring sciences: physiology and sociology (Mauss 1936: 373). In other words, sociophysiology is physiological sociology, a special science that studies the physiological side of human (and other animals') interrelations (Zeliony 1912: 405406).

# Interdisciplinary field of research
In addition to having been termed an interdisciplinary area for research, an area which demonstrates the concomitant relationship between physiology and social behavior (Di Mascio et al. 1955: 4), sociophysiology may also be described as social ethology and social energetics (Waxweiler 1906: 62). That is, the physiology of reactive phenomena caused by the mutual excitations of individuals of the same species (Waxweiler 1906: 62).
The interdisciplinary nature of sociophysiology largely entails a synthesis of psychophysiology and social interaction (Adler 2002: 884) such that a socio-psycho-biological study (Mauss 1936: 386) of biologico-sociological phenomena (Mauss 1936: 385) may ensue. Such socio-psycho-biological study has uncovered a sharing of physiology between people involved in a meaningful interaction (Adler 2002: 884), as well as mutually responsive physiologic engagement having normative function in maintaining social cohesion and well-being in higher social animals (Adler 2002: 885). This mutually responsive physiologic engagement brings into play the close links uniting social phenomena to the biological phenomena from which they immediately derive (Solvay 1906: 26).

# Interpersonal physiology
Furthermore, sociophysiology explores the intimate relationship and mutual regulation between social and physiological systems that is especially vital in human groups (Barchas 1986: 210). In other words, sociophysiology studies the physio- and psycho-energetic phenomena at the basis of social groupings (Solvay 1906: 25). Along these lines, Zeliony (1912) noted that
the changes of society are the result of the activities of the nervous system. Excitations vary with the same animal and with the same class of animals. The problem of the socio-physiologist is to find out what are the excitors and what the inhibitors. Physiology gives the laws of the nervous system.... Thus the duty of the socio-physiologist is to give a description of the nervous processes of groups which have resulted in changes in the  environment (Zeliony 1912; summarized in Ellwood 1916: 297298).
In addition, sociophysiology describes structure-function relationships for body structures and interactive functions relevant to psychiatric illness (Gardner 1997: 351), and also assumes that psychiatric disorders are pathological variants of the motivation, emotions, and conflict involved in normal communicational processes (Gardner and Price 1999: 247248). Psychiatry, thus, involves the diagnosis and treatment of what Lilienfeld (1879: 280) termed physiological social pathology, and may be classed as a subfield of sociophysiology, called pathological sociophysiology by Zeliony (1912: 405). As summarized by Ellwood (1916), Zeliony thought that, in the future,
a socio-physiological pathology will become necessary. Its field of observation will be the deviations from the norm which are observed either as a result of the pathological differences in the organism or as a result of other conditions, as in the insane or those addicted to the use of alcohol (Ellwood 1916: 298).
Ellwood (1916: 298) also noted that Zeliony's future sociophysiology, being a natural biological science, must be Darwinian.
In short and in sum, sociophysiology is reciprocal, interpersonal physiology (Adler 2002: 885).

# Notes and references

## Notes
-  Collaboration de deux sciences voisines: physiologie, sociologie (Mauss 1936: 373). Furthermore, Freund (1988) discusses the work of F. J. Buytendijk (1974), which "is one example of an effort to redefine mechanistic physiology in such a way as to include subjectivity and social existence as interrelated aspects of our physical being" (Freund 1988: 847), such that there exists a "mutually 'conditioning' relation between sociopsychological and biological factors. Social environments 'construct' bodies, which in turn have an impact on social behavior, and this behavior in turn further modifies bodies" (Freund 1988: 849).
-  Die physische Seite der Wechselbeziehungen der Menschen kann nichtsdestoweniger Gegenstand einer besonderen Naturwissenschaft sein, welche ich als physiologische Soziologie oder besser Soziophysiologie zu bezeichnen vorschlage (Zeliony 1912: 405-406). Zelionys 1912 paper  the earliest known which uses the term sociophysiology and its derivatives, e.g., Soziophysiologie, soziophysiologische, etc.  was originally delivered as a lecture to the Saint Petersburg Philosophical Society on March 19, 1909 (Zeliony 1912: 405). Although Zeliony (1912: 406) attributes the term sociophysiology to Russian philosopher A. I. Wedensky, Paul von Lilienfeld, in 1879, published a book titled Social Physiology, which uses throughout the unified concept, conjoined with a dash, social-physiology  in addition to the modified substantive, separated by a space, social physiology . G. P. Zeliony, a worker in Pavlov's lab, took as the starting point for his "future sociophysiology," the study of the "reflexive interrelations"  of humans and other animals (Zeliony 1912: 405; 412413).
-  Ethologie sociale; energetique sociale  physiologie des phenomenes reactionnels dus aux excitations mutuelles des individus de meme espece (Waxweiler 1906: 62).
-  Etude socio-psycho-biologique (Mauss 1936: 386); phenomenes biologico-sociologiques (Mauss 1936: 385).
-  Liens etroits qui unissent les phenomenes sociologiques aux phenomenes biologiques dont ils derivent immediatement (Solvay 1906: 26).
-  Phenomenes physio- et psycho-energetiques a la base des groupements sociaux (Solvay 1906: 25). Such phenomena are now known to involve neurotransmitters, hormones, pheromones, the immune system, etc.
-  "Die physiologische Socialpatholgie" (Lilienfeld 1879: 280); Pathologische Soziophysiologie (Zeliony 1912: 405).