Vestibulo emotional reflex

Vestibulo-emotional reflex (VER) refers to a theory that the vibration of the head, at amplitudes too fine to detect with the eye, changes in a predictable manner depending on different emotional states. Using visual imaging technology that measures microsecond vibrations of video pixels, and subsequently assigning the degree of change in amplitude and frequency a color (similar to thermal imaging) in the visual spectrum, the vestibulo-emotional reflex can be "seen." A Russian company, Elsys, patented the image processing method in 1998, calling it Vibraimage.. The parent company's site claims the reflex is sufficiently universal in humans to standardize and use, for example, in terrorist recognition.
Biomechanics
The purported physiology behind the reflex is an extension of the idea that, at rest without visual cues, human beings unconsciously hold their heads still and compensate for mild environmental stimuli by moving their eyes only. When confronted with a stimulus that has emotional significance, regardless of its location around the body, the head moves in a pattern that can be predicted (and is predictive of) by the type of emotion elicited.
At present, although the Elsys website treats the proposed mechanism above as fact, there is no published data to demonstrate the veracity of this theory. The sole study on the site appears to have been published only there, and so verification of the utility of VibraImage and the existence of the reflex as supported by research beyond the Elsys patent is still pending.

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