The Association for Applied Psychophysiology and Biofeedback (AAPB) has several components, and it encourages diversity of development of knowledge in an array of physiological and psychophysiological fields. The Biofeedback magazine is a focus of expression of the different components of the biofeedback science. This issue comprises different aspects of development of biofeedback in time.
Heart rate variability (HRV) is the latest fashion of interest in the biofeedback world. Leah Lagos presents a report of the relationship between postconcussion syndrome and healing of the autonomic nervous system (ANS) and HRV. The subject of ANS and disease is only in