Noun
the branch of psychology that is concerned with the physiological bases of psychological processes
Source: WordNetPsychophysiology (from Greek ψῡχή main, psȳkhē, "breath, life, soul"; φύσις main, physis, "nature, origin"; and -λογία main, -logia) is the branch of psychology that is concerned with the physiological bases of psychological processes. Source: Internet
Psychophysiology is also related to the medical discipline known as psychosomatics. Source: Internet