ABSTRACT
Psychophysiology is the discipline devoted to the study of the physical signs of the mind, i.e., those biological indicators able to furnish objective information about the state of psychic, cognitive, emotional, and relational processes. Research on schizophrenia, from a psychophysiological point of view, though still in a developmental phase, is already able to make an important contribution both to theoretical understanding of the Entropy of Mind or the Phrenentropy model and to the therapeutic and rehabilitative work of Negative Entropy. A trait marker is a biological parameter present in subjects who will develop schizophrenia or who are in a state of remission or recovery. Monitoring smooth pursuit eye movement of a mobile visual target constitutes one of the most interesting psychophysiological parameters in the field of the psychophysiology of schizophrenia. The alterations of eye movement in following a moving target with regular movement in the visual field of the patient constitutes, among possible trait markers of schizophrenia.
