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Psychophysiology is an interdisciplinary science that seeks to elucidate the relations between the mind and the body. Historically, psychophysiologists have been interested in the impact of psy-chological states and processes on physiological (especially auto-nomic) functions, and hence have often focused on psychosomatic or psychophysiological disorders. Psychophysiology is considerably broader than this, however, and psychophysiological perspectives have expanded and matured considerably over the past decades. Currently, many psychophysiologists are equally interested in the impact of neural and physiological factors on psychological pro-cesses. In fact, it is difficult to draw clear distinctions between psy-chophysiology and disciplines such as psychobiology, behavioural neuroscience, cognitive neuroscience and neuropsychology. There are a few general perspectives, however, that characterize the con-temporary field of psychophysiology. These include an emphasi