Research Areas Heart rate variability biofeedback as a treatment for asthma: a complement or alternative to steroids? Psychological treatment of comorbid asthma and panic disorder Heart rate variability biofeedback as a treatment for chronic drug and alcohol abuse Psychophysiological correlates of emotional stimulation: relationship to chronic mood states, and tendencies to substance abuse Measurement of adaptability and health: modeling control systems, oscillations as reflecting system stability Exploring psychophysiological treatment approaches for patients with multiple unexplained physical symptoms Psychophysiological factors in human optimal performance