Motion sickness seems to________.
A) result from activation of nausea centers in the brain stem
B) respond best to medication that "boosts" vestibular inputs
C) result from mismatch between visual and vestibular inputs
D) respond best to medication taken after salivation and pallor begins

Question

Quizplus · Accepted Answer

Motion sickness is believed to result from a discrepancy between the visual and vestibular inputs (the inner ear's balance and spatial orientation system). When the brain receives conflicting sensory signals, such as when reading in a car or boat, it can trigger symptoms of nausea and vomiting. Medications that alleviate motion sickness often work by reducing this discrepancy or desensitizing the brain to it. Boosting vestibular inputs can actually exacerbate motion sickness symptoms. Medication is often most effective when taken before travel begins, rather than waiting until symptoms have already started.

Motion Sickness Seems To________