Psychological research has always been a pioneer in many areas of the study of biological signals. Often the focus is on a single field such as EEG, ECG, skin conductance or eye tracking. But the simultaneous detection and analysis of several signals result in synergies that are significantly more than the sum of its parts.
Virtual environments provide test settings that are otherwise difficult or impossible to implement. Of course, such environments have completely different demands on its evaluations, for example in eye tracking.