Table 6.

Types of kinetogenic sensory conflict

Conflict type	Category A Conflicting sensory information Visual (VIS) Vs Vestibular (VES)	Category B Conflicting sensory Information Semicircular canals (SC) Vs Otolith Organs (OT)
Type 1 Conflicting motion-related input from two sensory systems	A1 VIS≠VES – Watching waves over the side of a swaying ship – Making head movements while wearing an optical device that distorts the visual field or inverts it by means of a prism	B1 SC≠OT – Vestibular Coriolis reaction. Head movement about an axis not identical with the body‘s axis of rotation, e.g., nodding the head while revolving on a rotating chair (Lansberg provocation test)
Type 2 First input signals motion,second input does not	A2 VIS+VES – – Pseudo motion sickness, simulator sickness – In a stationary simulator or cinema, watching a film shot from a moving vehicle or aircraft subjected to linear and/or angular accelerations	B2 SC+OT– – Caloric nystagmus – Alcohol-related nystagmus. Head movements during weightlessness (space sickness)
Type 3 Second input signals motion, first input does not	A3 VIS – VES+ – Riding inside a jolting vehicle without any external visual reference – Reading a book below deck on board ship	B3 SC – OT+ – Rotation at a constant speed about the body’s long axis when horizontal (barbecue rotation)