Infrasound & Motion: A New Theory On Some Forms Of Motion Sickness

The most widely accepted explanation for motion sickness is sensory conflict theory. A sensory conflict happens when our inner ears sense we are moving but our eyes do not agree, or vise versa. Much research has been carried out on motion sickness. An implicit assumption has apparently always been that motion is sensed only by detecting acceleration forces on the vestibular system (inner ear).

We have recently discovered an un-deniable relationship between motion and infrasound. Infrasound is rapid fluctuations in the local barometric pressure. In homes near wind turbines, these barometric fluctuations occur anywhere from 0.5 – 5 times per second. We have discovered a previously unrecognized fundamental physical link between infrasound and motion which is that infrasound is always present with motion, it is a key ingredient. It has been previously documented that exposure to infrasound without motion can cause the same motion sickness symptoms that happen with motion.

This is a significant point, because it demonstrates that infrasound is independently capable of causing symptoms that have long been attributed to acceleration on its own. This may be the root cause of what is commonly known as Wind Turbine Syndrome. We believe we can demonstrate that in sensitive people, infrasound produced by nearby wind turbines causes the inner ear (vestibular system) to receive a motion cue which are normally only detected when we are moving, meanwhile our eyes are not receiving a motion cue. This conflict in the central nervous system (CNS) leads some people to experience one (or more) of the symptoms listed under Sopite Syndrome. This includes sleep disruption, drowsiness, fatigue, vertigo, headache, confusion and at the extreme end, nausea & vomiting.