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Changing cFOV can lead to unnatural movement of the virtual environment in response to head movements. For example moving your head for 7 degrees in real time creates 11 degrees of movement in VR. This can lead to discomfort and a maladaptive condition called vestibular-ocular reflex gain adaptation.<ref name="oculus_best_practices">https://developer.oculus.com/documentation/intro-vr/latest/concepts/bp_app_simulator_sickness/</ref>
==Using Subtle Dynamic FOV to Combat Simulator Sickness==
Researchers from Columbia Engineering have used to changes in FOV to combat [[Simulator sickness]]. Researchers subtly decreased the users' FOV while they are moving in VR. They restored the users' FOV while they are standing still in VR. Researchers found that they were able to reduce discomfort while maintaining [[presence]].
==References==
