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New Theories Unravel Motion Sickness Mystery
17 Sep
Summary
- Conflicting sensory information is a leading theory for motion sickness.
- Predictive models in the brain may also trigger nausea.
- Genetics and migraines can increase susceptibility to motion sickness.
Motion sickness, once associated with seasickness, now affects individuals during car rides, flights, and even virtual reality experiences. Symptoms can arise within minutes and persist for hours, impacting travel and activities for many.
Scientists propose two main theories: conflicting sensory information, such as vision versus inner ear signals, and the brain's prediction models. When actual movement mismatches predicted sensations, the brain may trigger nausea as a protective response.
Individual susceptibility varies, influenced by genetics, with research suggesting inherited factors account for a significant portion of a person's vulnerability. Women and individuals with migraines, particularly vestibular migraines, report higher rates of motion sickness.
While medications like antihistamines can prevent symptoms, behavioral strategies such as focusing on the horizon and ensuring fresh air are also beneficial. For persistent cases, specialized physical therapy offers a gradual, exposure-based approach to desensitization.
